The kids want to get a trunk up into the treehouse and go to the Machine-a-Ma-Zoo, where they're introduced to simple machines, and learn about the pulley. Sally loses her "slidiness" and when they go to the Frictionarium, they find out that there's a force called friction that can stop a person from sliding.

Secret Super Digger - Sally is trying to grow a flower for her mom, but it just won't grow. Time to see Finola! At Finola's Farm, she introduces Cat, Sally and Nick to her secret super digger - Diggery the earthworm. Diggery shows them how plant roots need water air and compost, which Diggery helps to make. Sally's flower is sure to grow once she gets some of her own secret super diggers to help! Pucker Up and Blow - Nick and Sally are trying to whistle but they just can't seem to get it right! The Cat takes them to visit his friend, Rocky the Winter Wren, who is an expert whistler. Rocky, and his son Ricky, offer this advice: if you want to whistle, start with one note and practice.

Nick and Sally are having a sleepover in the treehouse and Nick is startled by a shadow. The Cat explains that shadows aren't scary if you know what they are. He takes them to Silhouette Valley where they learn that shadows are made by blocking light and the position of the light can make shadows grow or shrink. Nick unintentionally loses Sally's bouncy ball. They go to Ballaballo and learn how different balls are made of different materials, which help them move in different ways.

Manatees and Mermaids - Sally and Nick are pretending to swim, but why not go for a real swim asks the Cat! Off to the Glippydrippy Gulf to meet Matilda the Manatee and her son Marlin. Matilda and Marlon teach their guests how to swim slowly and gracefully. Until they hear the sound of a boat motor! Those can be dangerous for manatees, but luckily the Cat, Nick and Sally help their new friends to stay safe. And when they get back home, Nick and Sally will be sure to tell everyone to "Slow down for manatees!" The Last Chocolate - Only two chocolates left in the whole box, what a great present for Nick and Sally's Moms. That is until The Cat excitedly eats them! Oh no! How are they going to find more chocolate to give to their moms? Why a trip to visit Princess Lottachoca in the Cocoalicious Forest will help them! There, the Princess teaches Nick and Sally the chocolate-making song and they help to pick the beans, roast them, and to heat the juice and add sugar. And then, pouring the hot liquid into moulds of any shape. Now that the chocolate has cooled, it's time to go home and surprise their moms! Educational Objective: The process of how chocolate is made from the humble cocoa bean - by picking the beans, drying them, roasting them and then crushing them to get the juice, then adding sugar while you heat it, pour it into a mould and cool it.

Sniff and Seek - Nick's most favourite smell is chocolate chip cookies! But what is Sally's? She's not sure. What better way to find out than by playing sniff and seek with a skunk! Cat introduces Nick and Sally to Whiffy, and in the adventure of finding Sally's favourite smell they discover how good Whiffy is at protecting himself with his very own special smell. Aye Aye! - Nick and Sally are making Halloween masks, but they want to make them really scary. Cat takes them to meet Aiya, the Aye Aye, in the forest of Spookywoowoo. Aiya shows them, that even though he may look scary - his big ears, huge eyes and long fingers help him to find food. And now Nick and Sally know just how to make their masks scary!

Manatees and Mermaids - Sally and Nick are pretending to swim, but why not go for a real swim asks the Cat! Off to the Glippydrippy Gulf to meet Matilda the Manatee and her son Marlin. Matilda and Marlon teach their guests how to swim slowly and gracefully. Until they hear the sound of a boat motor! Those can be dangerous for manatees, but luckily the Cat, Nick and Sally help their new friends to stay safe. And when they get back home, Nick and Sally will be sure to tell everyone to "Slow down for manatees!" The Last Chocolate - Only two chocolates left in the whole box, what a great present for Nick and Sally's Moms. That is until The Cat excitedly eats them! Oh no! How are they going to find more chocolate to give to their moms? Why a trip to visit Princess Lottachoca in the Cocoalicious Forest will help them! There, the Princess teaches Nick and Sally the chocolate-making song and they help to pick the beans, roast them, and to heat the juice and add sugar. And then, pouring the hot liquid into moulds of any shape. Now that the chocolate has cooled, it's time to go home and surprise their moms! Educational Objective: The process of how chocolate is made from the humble cocoa bean - by picking the beans, drying them, roasting them and then crushing them to get the juice, then adding sugar while you heat it, pour it into a mould and cool it.

Sniff and Seek - Nick's most favourite smell is chocolate chip cookies! But what is Sally's? She's not sure. What better way to find out than by playing sniff and seek with a skunk! Cat introduces Nick and Sally to Whiffy, and in the adventure of finding Sally's favourite smell they discover how good Whiffy is at protecting himself with his very own special smell. Aye Aye! - Nick and Sally are making Halloween masks, but they want to make them really scary. Cat takes them to meet Aiya, the Aye Aye, in the forest of Spookywoowoo. Aiya shows them, that even though he may look scary - his big ears, huge eyes and long fingers help him to find food. And now Nick and Sally know just how to make their masks scary!

Sally keeps getting found when they play Hide and Seek. Cat takes them to Tagaloo to meet a great seeker. They keep trying to catch up to the elusive Tagaloop, and along the way they find out that they can use more than their sense of sight to find things. Sally loses her special bead in the sandbox and they can't find it. Cat takes them to the Hole-Lot-of Funhouse, where they have to make their way across different floors without falling through. Along the way they discover how the size and shape of materials can be used to sort or filter different materials.

Tough Enough - Nick and Sally are trying to guess what animal is the toughest one - is it a lion? Oh no, it must be the enormous elephant! Why not at all, says The Cat. The toughest of all is a teeny tiny Waterbear. Huh? Off to meet Cat's friend Wally the Waterbear. After shrinking down in the Thingamajigger, they find Wally and start to play the Tough Enough game! Wally is tough enough to live anywhere, so it's off to Freeze Your Knees Snowland to test it out. Then they go to the super hot Gritchity-Gratch Desert, then even a trip into space! Wally can live anywhere! He really is the toughest of all! How Cool is Coral - The Cat needs help! He needs to get his fish friend Ting Tang Tony back to his family. Off to Scoobamareen they go! Tony and Cat got distracted while he was drawing pictures of the beautiful coral that's all around them. Using Cat's drawings as a map, they swim to get Tony back home. Along the way they meet little polyps that live in the coral and learn that they actually helped to make it! They learn about how long it takes to make and how delicate it is. Luckily they soon find Tony's family and they're reunited. Back home Nick and Sally make their own coral drawings, cause you never know when the Cat might need help again!

Nick and Sally can't agree on the "right" way to sort their toys. The Cat takes them to Toborrowland to help him return a bunch of things. As they confront different obstacles, they have to come up with different ways of sorting Cat's things, and they realize there are lots of ways to sort. T The kids are making bubbles and want to save one for Sally's mom. But they always pop. In Odds-n-Endsville they find out that landing bubbles on some surfaces helps the bubbles last longer.

Surprise Surprise - Try as they might, Nick and Sally just can't learn to do a somersault. Luckily Cat's friend Luis the Armadillo is the king of the roly polys! But when they find Luis, they learn that he only rolls when he gets surprised. They take turns trying to surprise him, and when they finally do, they're the ones surprised when they learn that not only can Luis roll, but he can even run underwater! Back at home, they follow Luis' advice and are now able to somersault! A Howling Good Time - Nick and Sally are pretending to be lost adventurers when Sally wonders what to do if you really do get lost. The Cat in the Hat knows a wolf pup who knows all about getting lost and found! In the Hooty Howly Woods Grayson shows them how wolves howl to communicate and to find each other. Now Sally and Nick know one thing to do if they get lost - howl for mom!

Meet the Beetles - Nick and Sally must protect their cookie jar from cookie snatchers! But how? Well by meeting three of the Cat's beetle friends, that's how! Stan the Giant Stag beetle shows them how to look scary, while Cliff the Click beetle teaches them to make a noise them jump! And Bobbi the Bombardier beetle has a stinky surprise for those that try to sneak up on her. Now Nick and Sally can keep their cookies safe! Tongue Tied - Mmm, there's nothing better than a blueberry popsicle, even though it makes your tongue blue! Speaking of tongues, the Cat has some friends with marvelous tongues! The kids meet Treetop Tom and see how his tough tongue can pick food off of thorny branches. Then Snifty the boa snake shows them how she uses her tongue to smell. And by using Cat's "Not-So-Fast-Glasses", they can see Colin the chameleon's lightening fast tongue get him his food. Nick and Sally realize that their tongues are pretty useful too.. for asking for another popsicle!

Surprise Surprise - Try as they might, Nick and Sally just can't learn to do a somersault. Luckily Cat's friend Luis the Armadillo is the king of the roly polys! But when they find Luis, they learn that he only rolls when he gets surprised. They take turns trying to surprise him, and when they finally do, they're the ones surprised when they learn that not only can Luis roll, but he can even run underwater! Back at home, they follow Luis' advice and are now able to somersault! A Howling Good Time - Nick and Sally are pretending to be lost adventurers when Sally wonders what to do if you really do get lost. The Cat in the Hat knows a wolf pup who knows all about getting lost and found! In the Hooty Howly Woods Grayson shows them how wolves howl to communicate and to find each other. Now Sally and Nick know one thing to do if they get lost - howl for mom!

Meet the Beetles - Nick and Sally must protect their cookie jar from cookie snatchers! But how? Well by meeting three of the Cat's beetle friends, that's how! Stan the Giant Stag beetle shows them how to look scary, while Cliff the Click beetle teaches them to make a noise them jump! And Bobbi the Bombardier beetle has a stinky surprise for those that try to sneak up on her. Now Nick and Sally can keep their cookies safe! Tongue Tied - Mmm, there's nothing better than a blueberry popsicle, even though it makes your tongue blue! Speaking of tongues, the Cat has some friends with marvelous tongues! The kids meet Treetop Tom and see how his tough tongue can pick food off of thorny branches. Then Snifty the boa snake shows them how she uses her tongue to smell. And by using Cat's "Not-So-Fast-Glasses", they can see Colin the chameleon's lightening fast tongue get him his food. Nick and Sally realize that their tongues are pretty useful too.. for asking for another popsicle!

Sally thinks that the three sticks she has aren't enough to make anything. Cat takes them to a place where they can get more sticks. And along the way, they discover just how many things you can do with three sticks. When Nick drops the mailbag into his train set, his fingers are too big get it out. Cat shrinka-ma-doodles them so they're small enough to be in the train set. But when the Thinga-ma-jigger falls out of reach, they need the right sized tool to help them out.

Digging The Deep - Nick and Sally are exploring how deep they can dig in the sandbox. The Cat arrives to whisk them away to the deepest place he knows - the bottom of the Swirly Whirly Ocean! They meet up with Aurilia the Angler fish who guides them to the very bottom of the ocean floor. Now that they've gone as deep as deep can be, it's off to find the next adventure! Puddle Puzzle - Nick and Sally are excited to jump in the giant puddle in their backyard - but it's gone! Where did it go? With the help of Cat's Seussian camera, they see that the puddle has turned into water vapour. Off they go to the Bluey Blue Sky to follow their puddle. They discover that the water vapour rises high into the sky, then cools off and falls as rain. They go back home and are delighted to see that their puddle is back.

Nick and Sally's soccer game is obstructed by a large log that they can't lift out of the way. In Machine-a-ma-zoo they discover that there's a much easier way to move that log than by lifting it. Nick's new plane is flying well but is a little dull so the kids add buttons and glitter but then they don't understand why the plane isn't flying as well as it did. In Odds n' Endsville, they discover that there can be too much of a good thing, and sometimes keeping it simple is the best solution.

Flutter By Butterfly - Sally and Nick are pretending to be butterflies, but they're not very good at it. The Cat takes them to meet Bernadette the Monarch butterfly, who can teach them all about fluttering. Following Bernadette from Milky Weed Meadow to Prickly Pines forest they learn that butterfly wings are used for so much more than just fluttering! Pretty in Pink - Sally and Nick are having fun trying out different moves when the Cat arrives to show them some cool moves of his own. He learned them from Pinkie the flamingo. The kids want to learn too, so off they go to Gooney Goon Lagoon! There they learn all about flamingos - fun moves and all! Back at home Cat, Nick and Sally all move together... the flamingo way!

Sally is convinced that a tall thin glass of juice holds more than a short wide glass so Cat takes them to Point O'View where they learn that getting evidence can cause them to change their mind. Nick and Sally wonder if they can walk on a cloud, and the Cat takes them to Mount Knowmore. As they climb, they discover that materials have different properties that allow them to be solid or fluid. And when they get to the top, they have gathered enough evidence through experience of walking through the clouds to answer the original question.

Flutter By Butterfly - Sally and Nick are pretending to be butterflies, but they're not very good at it. The Cat takes them to meet Bernadette the Monarch butterfly, who can teach them all about fluttering. Following Bernadette from Milky Weed Meadow to Prickly Pines forest they learn that butterfly wings are used for so much more than just fluttering! Pretty in Pink - Sally and Nick are having fun trying out different moves when the Cat arrives to show them some cool moves of his own. He learned them from Pinkie the flamingo. The kids want to learn too, so off they go to Gooney Goon Lagoon! There they learn all about flamingos - fun moves and all! Back at home Cat, Nick and Sally all move together... the flamingo way!

Sally is convinced that a tall thin glass of juice holds more than a short wide glass so Cat takes them to Point O'View where they learn that getting evidence can cause them to change their mind. Nick and Sally wonder if they can walk on a cloud, and the Cat takes them to Mount Knowmore. As they climb, they discover that materials have different properties that allow them to be solid or fluid. And when they get to the top, they have gathered enough evidence through experience of walking through the clouds to answer the original question.

Babies - Sally is looking after some baby hamsters, but how can she and Nick hold them right? Well, different animals hold their babies different ways. A trip to Ozzie-Wozz Outback will help them, Cat has some friends who know all about carrying babies! First up is Wilma the spider, who carries all her babies on her back. Then it's off to see Dilly the crocodile, she carries her babies in her mouth! And the last stop, Coco the Koala who uses a pouch to carry her little one. But how does that help Nick and Sally? Well all the babies were happiest with their moms, so they'll just leave them all together. Fast - It's a race to the treehouse, but Nick and Sally wish they could go as fast as an airplane! How about a peregrine? asks The Cat. What's that? The fastest creature in the world! His friend Perry the Peregrine Falcon will show them how fast he can be. Off to Steep-and-Deep Cliffs to meet him! Using Cat's special backpacks, the kids have wings like Perry's so they can fly through the air too. Perry shows them how he dives straight down to catch his food. Who wants to be as fast as an airplane, when you can be a peregrine falcon!

Be Cool - Phew, it's hot outside! How are Sally and Nick going to stay cool? Cat suggests that they should visit some friends in the Dizzle-dazzle Desert to learn how to keep cool. They learn that some animals are light coloured, some stay out of the sun, and some, like Tommy the coolest toad around, just mooove sloooow. Nick and Sally take their advice, but Cat has an even better idea - run through a sprinkler! Elephant Walk - When building a toy construction set, Nick and Sally wonder if there's such thing as a one-thing-does-it-all tool. Well, the Cat knows just who to visit to find out - Themba the African elephant! Themba, and her daughter Efia, show the Cat and the kids all the different things their trunks can do. Nick and Sally realize that elephant trucks are just like hands, so they already have a one-thing-does-it-all tool!

No Night Today - Nick and Sally want to keep playing, but it's getting dark. Why does nighttime have to come? The Cat knows someone who can answer that question - Astronaut Audrey! With a trip to her International Space Station and a large model of the solar system, the kids learn that it's the earth's spinning near the sun that makes it night or day. Fun in the Sun - Phew it's hot! Too hot to play outside. Not according to The Cat! His friend Hilda the Hippo knows all about having fun in the sun. A visit to Muddymoo River teaches them that hippos make their very own sunscreen to protect them from the hot sun. Now that they all have their sunscreen on, it's time for some fun in the sun!

Blue Feet Are Neat - Nick and Sally are trying out their new blue rubber boots but they keep getting stuck in the mud! Cat knows just who can help them - Buster, the Blue-footed Booby bird. Buster is only too happy to show them how his wide, flat blue feet help him move easily over the muddy shore. With Cat's help to make their boots wide and flat, Sally and Nick can now walk across the mud without getting stuck - just like Buster! Reef Magic - Nick has difficulty learning a "disappearing" magic trick, when who should appear but The Cat in the Hat! He takes Nick and Sally to the coral reef of Scoobamareen. There they learn that distraction is a great way for some sea creatures to hide themselves from other fish who might be looking for a bite to eat. Back at home, Nick and Sally use what they learned to make their stuffed panda disappear!

Little Lemmings - It's cold outside, but Nick and Sally want to keep playing. Is there a way to stay warm out in the cold? Cat's friend Lars the Lemming will know! He lives in the Wundra-Bundra-Tundra. It's cold out, but with Lars' fur coat, he doesn't even notice! They help Lars find a new home, one where there's more food for him and his family and they discover that he uses the snow to help keep him warm! Back at home the kids wear two winter coats to help them keep warm. But what's even warmer than that, hot chocolate! Keep the Beat - Nick and Sally have been running around the backyard and now their chests are thumpity thumping! The Cat explains that that is their hearts boom boom booming! But why? wonders Sally. A visit to Dr. Giggles will answer that question. By shrinking down super small, they follow Dr. Giggles' directions to follow the path that blood takes, learning about how the heart is a pump. They watch Thing 2's heart beat faster when he runs, and slows down when he stops. With all this running around, their bodies are now making another sound - rumbling tummies!

Blue Feet Are Neat - Nick and Sally are trying out their new blue rubber boots but they keep getting stuck in the mud! Cat knows just who can help them - Buster, the Blue-footed Booby bird. Buster is only too happy to show them how his wide, flat blue feet help him move easily over the muddy shore. With Cat's help to make their boots wide and flat, Sally and Nick can now walk across the mud without getting stuck - just like Buster! Reef Magic - Nick has difficulty learning a "disappearing" magic trick, when who should appear but The Cat in the Hat! He takes Nick and Sally to the coral reef of Scoobamareen. There they learn that distraction is a great way for some sea creatures to hide themselves from other fish who might be looking for a bite to eat. Back at home, Nick and Sally use what they learned to make their stuffed panda disappear!

Little Lemmings - It's cold outside, but Nick and Sally want to keep playing. Is there a way to stay warm out in the cold? Cat's friend Lars the Lemming will know! He lives in the Wundra-Bundra-Tundra. It's cold out, but with Lars' fur coat, he doesn't even notice! They help Lars find a new home, one where there's more food for him and his family and they discover that he uses the snow to help keep him warm! Back at home the kids wear two winter coats to help them keep warm. But what's even warmer than that, hot chocolate! Keep the Beat - Nick and Sally have been running around the backyard and now their chests are thumpity thumping! The Cat explains that that is their hearts boom boom booming! But why? wonders Sally. A visit to Dr. Giggles will answer that question. By shrinking down super small, they follow Dr. Giggles' directions to follow the path that blood takes, learning about how the heart is a pump. They watch Thing 2's heart beat faster when he runs, and slows down when he stops. With all this running around, their bodies are now making another sound - rumbling tummies!

Help With Kelp - It's Fish's birthday and Nick and Sally want to get him a special present, but who can they ask for ideas? Cat's friend Gary the Garibaldi fish might have an idea! Off to the Briny Blue Sea where they meet a variety of creatures in a kelp forest who use the kelp for both food and protection. Back at home they make a picture of the kelp forest for Fish. It's the best present he could ever hope for! Treetop Tom - Nick and Sally are playing when their ball gets caught up high in the branches of a tree. Oh how they wish they were tall! Being tall is something Cat's friend Treetop Tom knows all about. They meet the giraffe in the So Sunny Savannah, and with the help of Cat's "tallerizers", Nick and Sally are as tall as Tom! They soon learn that being small has its

I Love the Nightlife - Nick wants to stay awake all night. Good thing the Cat needs help finding his most favorite hat that he lost in the forest of Wagamaroo! The Cat takes Nick and Sally on a nocturnal adventure, along the way meeting a variety of animals who stay up all night! Oh Give Me a Home! - Nick has a super duper special shell and Sally wants one too! The Cat in the Hat takes them to a beachside adventure where they meet Tucker, a hermit crab who is also looking for a new shell because he's grown too big for his. An under the sea fashion show gives both Tucker and Sally super duper special shells!

The kids need to move a big rock in their backyard so they can plant an apple tree. The Cat takes them to Machine-a-Ma-Zoo, where they learn how a lever can solve their problem. Sally is playing a song on an instrument made up of different things in the Treehouse but she can't find the right note for her song. In Gongolia, they find out that bigger things make lower sounds and smaller things make higher sounds.

Name That Sound - Sally and Nick are trying to stump each other by guessing the animal sounds they're making. But the Cat stumps them both when he tries to make the sound of a cricket! That didn't sound like a cricket. They all try but just can't figure out how a cricket makes its noise. Well Cat's friend Clarence the Cricket can surely show them! Off to the Grassy-Grove-Dell to meet him! He shows him his wings, one that is comb-like, the other a scraper, when he rubs them together, he makes his wonderful cricket noise. Back at home Nick and Sally find things around the house they can use to mimic Clarence - a deck of cards and a comb! Fabulous Feathers - Sally is playing dressup, but her favourite hat no longer has any feathers on it. Where can they find more? The Cat's good friend Puranjay might be able to help! He's a peacock who lives in Feathery Flats, he has plenty of feathers! Sally collects the feathers that have fallen out of Puranjay and discover that each one has it's own distinct job. But it's his tail feathers that are just jazzy and snazzy enough for her hat! They are the most fabulous feathers!

Show Me the Honey - Sally and Nick have run out of honey! Luckily the Cat knows just where to go to get more. They visit Queen Priscilla Buzzoo who invites them to join in the bee dance to learn how to make honey. Migration Vacation - The purple martin swallow that lives in Sally's backyard has gone missing! The Cat, with the help of a variety of forest creatures, help Nick and Sally track down the bird, and learn how and why birds migrate.

Name That Sound - Sally and Nick are trying to stump each other by guessing the animal sounds they're making. But the Cat stumps them both when he tries to make the sound of a cricket! That didn't sound like a cricket. They all try but just can't figure out how a cricket makes its noise. Well Cat's friend Clarence the Cricket can surely show them! Off to the Grassy-Grove-Dell to meet him! He shows him his wings, one that is comb-like, the other a scraper, when he rubs them together, he makes his wonderful cricket noise. Back at home Nick and Sally find things around the house they can use to mimic Clarence - a deck of cards and a comb! Fabulous Feathers - Sally is playing dressup, but her favourite hat no longer has any feathers on it. Where can they find more? The Cat's good friend Puranjay might be able to help! He's a peacock who lives in Feathery Flats, he has plenty of feathers! Sally collects the feathers that have fallen out of Puranjay and discover that each one has it's own distinct job. But it's his tail feathers that are just jazzy and snazzy enough for her hat! They are the most fabulous feathers!

Show Me the Honey - Sally and Nick have run out of honey! Luckily the Cat knows just where to go to get more. They visit Queen Priscilla Buzzoo who invites them to join in the bee dance to learn how to make honey. Migration Vacation - The purple martin swallow that lives in Sally's backyard has gone missing! The Cat, with the help of a variety of forest creatures, help Nick and Sally track down the bird, and learn how and why birds migrate.

When Nick's magic trick causes his toy car to disappear under the porch, the Cat takes them to Arcade Island to win a Grasper-ma-clasper. Instead, they find out the magic of bumping things around. The kids want to make a great snowman but the clothes they've chosen are frozen in the ice and snow. Cat takes them to Coldsnap Island, where they discover that when they warm up ice or snow it becomes water.

Take a Walk - Sally and Nick are practicing to be in a three-legged race, but walking on three legs is hard! Well if anyone knows about walking, its Cat's friends Sid the centipede, Spinny the spider and Bugsy the beetle! They all teach the kids how they walk on many legs by keeping a steady pace and walking in a rhythm and a beat. Back at home, Nick and Sally practice what they learned by using their own special rhythm! Cotton Patch - Oh no! Nick has torn his favourite shirt! He needs a perfect patch of cotton to fix it. Good thing Cat's friend Dr. Twiggles knows all about cotton! Off to Fluff'n Stuff Fields to see him! Once there, the kids are astonished to learn that you can make clothes from plants! Dr. Twiggles shows them how to pick the cotton, clean and dry it, comb it and spin it into thread. Finally, he demonstrates how the thread comes together to make a patch by using his loom. They even learn how to dye the cotton by using berry juice. Nick's favourite shirt is as good as new!

A Plan for Sand - Nick and Sally are playing in their sandbox, but there's not enough room for them to build their castles. The Cat arrives to take them to the biggest sandbox they'll ever see! In the desert, they meet Carmela the Camel who teaches them about how camels are adapted to live in the dry, sandy climate. Whale Music - Nick and Sally have made a song to sing to their moms, but they can't get the ending quite right. The Cat in the Hat takes them to meet the best singing teacher in the world, Humphrey the Humpback Whale! While bobbing in the ocean, Humphrey teaches the kids that whales communicate by singing, and that it's not how you sing that matters, but what you're saying in the song. The kids return home to delight their mothers with their song!

When Nick's water glass suddenly falls over without anyone touching it, Cat comes to help them solve the mystery. They go to The Great Causeway and discover the world of cause and effect. Nick and Sally are playing musical instruments and notice that Fish's water is rippling. Why? Cat takes them to the Jingly Jungle for a concert by the great Vibrato. They discover that sound and vibration go together.

Gorillas in the Nest - Sally and Nick have made a sleepover tent on the floor. But it's not very comfortable. The Cat's friend Gordon the Gorilla knows how to make a comfortable bed. Off to the Twisty-Misty Mountains to meet him! They discover that gorillas build nests to sleep in, with the dads sleeping on the ground and the moms and kids sleeping in a tree! Now Nick and Sally know how to make their own comfy cozy "nests" at home! Tale of a Dragon - Dragons don't really exist, but Cat knows some lizard friends who are oh-so like dragons! They can show Nick and Sally how to pretend to be dragons. The first one they meet is Ignacio the green iguana who shows them his spikes and dewlap. Then it's off to meet Draco the flying lizard who has wings! Kimora the komodo dragon is the last stop, she shows the kids her long wiggly tongue. Now, with some help from things around the house, Nick and Sally know just what they need to be dragons!

When Nick's water glass suddenly falls over without anyone touching it, Cat comes to help them solve the mystery. They go to The Great Causeway and discover the world of cause and effect. Nick and Sally are playing musical instruments and notice that Fish's water is rippling. Why? Cat takes them to the Jingly Jungle for a concert by the great Vibrato. They discover that sound and vibration go together.

Gorillas in the Nest - Sally and Nick have made a sleepover tent on the floor. But it's not very comfortable. The Cat's friend Gordon the Gorilla knows how to make a comfortable bed. Off to the Twisty-Misty Mountains to meet him! They discover that gorillas build nests to sleep in, with the dads sleeping on the ground and the moms and kids sleeping in a tree! Now Nick and Sally know how to make their own comfy cozy "nests" at home! Tale of a Dragon - Dragons don't really exist, but Cat knows some lizard friends who are oh-so like dragons! They can show Nick and Sally how to pretend to be dragons. The first one they meet is Ignacio the green iguana who shows them his spikes and dewlap. Then it's off to meet Draco the flying lizard who has wings! Kimora the komodo dragon is the last stop, she shows the kids her long wiggly tongue. Now, with some help from things around the house, Nick and Sally know just what they need to be dragons!

Many Ants Make Light Work - Nick and Sally are trying to put up a tent in their backyard but it's not working! Nick is pulling when Sally is pushing and it's just making a giant heap! Good thing the Cat knows a million trillion friends who are experts at teamwork! He whisks the kids off to visit an ant colony where Nick and Sally learn that you can do anything when you work together! Nest Best Thing - Nick and Sally have found some bird eggs in their backyard, but their nest is destroyed. Where are they going to keep them? The Cat in the Hat brings them to an expert nest builder, Mrs. Robin, who shows the children how to build a nest especially for those robin eggs.

Sally invents a secret treehouse handshake, but Nick can't remember the sequence. The Cat takes them to Over-and-Overton, where they figure out how to get through a series of obstacles by recognizing patterns. Nick and Sally don't understand why one toy car goes faster than another. The Cat says he needs their help to move some big pictures and along the way, they find out about how air is matter (takes up space and has mass) and can push on objects.

Paper Chase - Sally and Nick are making paper airplanes, but have run out of paper! Luckily Cat's friend Dr. Twiggles can help them! Off to the Woody Wood Woods to see him. There, Dr. Twiggles shows them how to make new paper out of old paper - recycling! They watch how the old paper is shredded, then water and cleaner are added to make it into a thick, soupy mess! Then they put it through rollers that flatten it into large sheets of paper! Now Nick and Sally can make their airplanes, and the best part, they used recycled paper! A Polar Adventure - Nick and Sally have lost Teddy outside, they need to find him, bears don't like the snow! Well some bears do, proclaims the Cat. In Freeze-Your-Knees-Snowland, Cat's friend Polly the polar bear loves the snow! They meet Polly and her two bear cubs and learn how their thick fur keeps them warm and how their long claws keep them from slipping on the ice. When a storm blows in, Polly keeps everyone warm in her den. Polar bears really do like the cold! Back home, Sally finds Teddy buried under the snow, but he was nice and safe in his own little den!

Sally is trying to make a vase for her mother but each one she tries falls over. Cat takes the kids to Blueprintia where designs become real. They discover what they can learn by designing before building, which helps Sally make the vase back at home. The kids are creating a game that involves "fishing" for prizes, but they can't "catch" any of the prizes. The Cat takes them to Arcade Island where they discover what will and won't be attracted to a magnet.

Wrappers Delight - Sally and Nick are trying to wrap a present for their moms. But they're having problems. Why meeting Cat's good friend Gina the Giraffe Weevil, will help! Gina shows them how she uses leaves to wrap her eggs to protect them while she waits for them to hatch. They learn how to carefully roll and fold the leaf so it doesn't rip and it protects the egg. Back at home they can finally finish wrapping their present - a statue of the Cat in the Hat! Dive Swim Scoop - There's a frog in Nick and Sally's pool! They have to get him out but can't catch him. Cat's good friend Penny the Pelican can teach them how to catch things in water! Along the way they meet a gannett who shows them how he dives deep into the water to catch his food and a cormorant that zigs and zags through the water to catch hers. But that won't help them catch the frog in their shallow pool. They finally find Penny and watch how she scoops with her big bill, like a net! Now Nick and Sally know how they can rescue the frog in their pool.

Sally is trying to make a vase for her mother but each one she tries falls over. Cat takes the kids to Blueprintia where designs become real. They discover what they can learn by designing before building, which helps Sally make the vase back at home. The kids are creating a game that involves "fishing" for prizes, but they can't "catch" any of the prizes. The Cat takes them to Arcade Island where they discover what will and won't be attracted to a magnet.

Wrappers Delight - Sally and Nick are trying to wrap a present for their moms. But they're having problems. Why meeting Cat's good friend Gina the Giraffe Weevil, will help! Gina shows them how she uses leaves to wrap her eggs to protect them while she waits for them to hatch. They learn how to carefully roll and fold the leaf so it doesn't rip and it protects the egg. Back at home they can finally finish wrapping their present - a statue of the Cat in the Hat! Dive Swim Scoop - There's a frog in Nick and Sally's pool! They have to get him out but can't catch him. Cat's good friend Penny the Pelican can teach them how to catch things in water! Along the way they meet a gannett who shows them how he dives deep into the water to catch his food and a cormorant that zigs and zags through the water to catch hers. But that won't help them catch the frog in their shallow pool. They finally find Penny and watch how she scoops with her big bill, like a net! Now Nick and Sally know how they can rescue the frog in their pool.

Sally and Nick have wrapped Father's Day gifts, but when they get mixed up the kids can't tell which is which. Cat takes them to Zippy Zaroo's Cookie Factory where each cookie has a toy inside. When the shrunken Thingamajigger ends up inside a cookie, they have to use their knowledge about the properties of matter and deductive reasoning to identify which cookie it's in. Nick and Sally are disappointed when their toy's battery runs out of power. The Cat takes them to Lots-o-Lakes Land to see the flight of the Dipsydoodlers. But along the way, the Thinga-ma-jigger runs out of Go-Go-Go juice and they have to find alternative forms of energy to make it go.

Flower Power - Sally's mom has a cold, so Sally wants to pick her some colorful flowers to make her feel better. The Cat in the Hat takes Nick and Sally to the forest of Flora-Fah-Zoom where they meet three different creatures that all depend on flowers to live. Sally decides to make her mother a picture of their adventure in Flora-Fah-Zoom instead of picking a flower that animals need in order to survive. Snowman's Land - Sally and Nick have just finished making a statue of the Cat in the Hat out of snow, but he's starting to melt! Good thing Cat knows where to take the melting snowcat: to the cold and snowy north! In the arctic, the kids skate on a frozen lake, make snow sculptures, and learn that water can freeze and melt when it's cold or warm outside. Because it's getting warmer back home, they leave their snowcat sculpture there so they can come back and visit him!

Step This Way - The kids are playing dressup, with Sally wearing her mom's shoes, and Nick wearing his dad's shoes. They're having trouble walking, and the Cat thinks it's because their feet are the wrong shape. But doesn't everyone have the same shaped feet? Not at all! The Cat takes them to the Jungle of Bingle-Bungle Boo to meet his friends Emily the teal, Mikey the lemur and Greg the Gecko. They see that animals have differently shaped feet to help them do different things! You need the right feet for the right job! Anything You Can Do - Nick and Sally are pretending to be The Cat in the Hat. But there's only one Cat, no doubt about that! Pretending to be other people is hard. The Cat takes Nick and Sally to meet his good friend Mimi the Mimic Octopus to learn some tips on how to pretend to be someone else. They learn how to observe, pick out something special about the person and then copy it. Mimi does it to protect herself, but now Nick and Sally can pretend to be the one and only Cat!

Balancing Act - Sally and Nick are trying to walk across a beam in their backyard, but are having trouble staying on it! Can the Cat help? Why of course! His friend Zappa the snow leopard is an amazing balancer! He uses his big wide feet and his long tail to help him keep his balance. Nick and Sally don't have tails, but they see how Zappa moves carefully to keep his weight balanced, now they know what to do at home. Using broomsticks to help them stay balanced, Nick and Sally are able to cross the balance beam. And just in time to have some yummy bran berry muffins! Marvelous Marbles - The kids are playing with glass marbles, until one of them rolls away! It was Nick's "extra luck never miss marble", now what is he going to do? Cat will take them to a sandy beach that's full of marbles! But when they get there, all they see is sand. Cat's friend Sharky McGee explains that sand makes glass. He shows them how sand is turned into glass and all the wonderful things you can make with it. Including marbles!

Biggest Bird - Sally and Nick are pretending to be birds, because it's fun to fly! But not all birds can fly, says the Cat. His friend Os the ostrich can't fly, but he can do oh so many other things! Why don't they go meet him and try to guess what he's best at doing? Off to Savannah Saloo! They guess that he's good at being big, a really fast runner, growing beautiful feathers and seeing really far away! But those aren't what he does best. They meet Os' wife and ostrich chicks and realize that being moms and dads are what ostriches do best! Just like Nick and Sally's moms and dads! Drum Di Drum - Nick and Sally are trying to make some music, but they need drums. What about the drums in your ears? asks the Cat. Drums in ears?? Dr. Giggles will teach them all about it! By shrinking down super small, they go inside Thing One's ear to explore. They get to the ear drum and learn that it's not for making sounds, but for catching them! Back at home they play their music, and thank their ear drums for being able to hear it!

Balancing Act - Sally and Nick are trying to walk across a beam in their backyard, but are having trouble staying on it! Can the Cat help? Why of course! His friend Zappa the snow leopard is an amazing balancer! He uses his big wide feet and his long tail to help him keep his balance. Nick and Sally don't have tails, but they see how Zappa moves carefully to keep his weight balanced, now they know what to do at home. Using broomsticks to help them stay balanced, Nick and Sally are able to cross the balance beam. And just in time to have some yummy bran berry muffins! Marvelous Marbles - The kids are playing with glass marbles, until one of them rolls away! It was Nick's "extra luck never miss marble", now what is he going to do? Cat will take them to a sandy beach that's full of marbles! But when they get there, all they see is sand. Cat's friend Sharky McGee explains that sand makes glass. He shows them how sand is turned into glass and all the wonderful things you can make with it. Including marbles!

Biggest Bird - Sally and Nick are pretending to be birds, because it's fun to fly! But not all birds can fly, says the Cat. His friend Os the ostrich can't fly, but he can do oh so many other things! Why don't they go meet him and try to guess what he's best at doing? Off to Savannah Saloo! They guess that he's good at being big, a really fast runner, growing beautiful feathers and seeing really far away! But those aren't what he does best. They meet Os' wife and ostrich chicks and realize that being moms and dads are what ostriches do best! Just like Nick and Sally's moms and dads! Drum Di Drum - Nick and Sally are trying to make some music, but they need drums. What about the drums in your ears? asks the Cat. Drums in ears?? Dr. Giggles will teach them all about it! By shrinking down super small, they go inside Thing One's ear to explore. They get to the ear drum and learn that it's not for making sounds, but for catching them! Back at home they play their music, and thank their ear drums for being able to hear it!

Top of the Sky: Nick, Sally and Cat are playing with their toy rocket. Using the Cat's "Whoa-Look-At-It-Go-Launcher," he shoots the rocket up up and up! But now they need to go find it. Off to the top of the sky! They pass the treetops, and the mountains. Where is the top of the sky? They keep going higher until they're in space! They meet Audrey the Astronaut who explains that there is no top to the sky. The sky turns into space and space goes on forever! Just when the kids think their rocket is lost, they find it in Audrey's space station. Though they can't launch their rocket to the top of the sky, launching it to the moon is just as cool! Jiggle Bones: Nick and Sally are wiggling and jiggling like the jelly mould in front of them. But they can't quite widdle the same way. How come? Bones, of course! announces the Cat. Bones keep their bodies from being wiggly and jiggle. But why do they need bones? A visit to Dr. Giggles will answer that question! They learn about the big strong bones that help us stand and walk, the small bones that help us bend and move, and all the important bones that help protect our squishy bits. Even though they won't let you wiggle and jiggle like jelly, bones are important!

Nick and Sally are trying to build a sandcastle but the sand is either too dry or too wet. Cat takes them to see the Song Flower Sisters, who need just the right mixture of water and soil before they'll sing. Through multiple trials, Nick and Sally learn the importance of recording procedures and of perseverance as they find the right mixture for the flowers. Sally wants to make a mobile balance with four identical rubber ducks, but she's only got three. Cat takes them to The Bazaar at Balance Point, where the Things throw everything off balance. Sally discovers that weight and size are not always equivalent and that there are many different ways to balance objects.

Rumbly Tumbly: Nick's hungry tummy is rumbling! But why do our stomachs make noises when they're hungry? A super shrunken trip into Thing One's stomach will show them the answer! They learn how chewing and stomach juices help to break down the food, and the tummy sounds are actually the stomach working. When your tummy is empty, the sounds are much louder! There's only one way to quiet Nick's rumbly tumbly... a chewy chocolate chunky chunk chip cookie! Planet Name Game: Nick and Sally have run out of things to name in the garden. Good thing Cat needs help putting his model of the solar system back together - they can help him name the planets! Off in the Space-a-ma-racer they go on a whirlwind trip around the universe, learning the names of the seven planets as they go.