Trick or Treat - It's Halloween! The Cat in the Hat takes Sally and Nick trick or treating - his way! Around the world they go, meeting three new friends who teach them each of the tricks they do and share the treats that they like to eat. Back at home Nick and Sally are ready to go trick or treating, with plenty of new tricks to share! King Cecil the Seahorse - Sally is off to fight the "dragon"! But Nick wants to go, he doesn't want to stay and watch the baby princess, he wants to go on an adventure. The Cat explains that babies can be part of the adventure. Why don't they go meet King Cecil the Seahorse, he takes all his babies wherever he goes! Nick and Sally discover that taking care of babies is much more fun than fighting dragons.

Super Cleaner Upper: Nick and Sally are cleaning up the backyard when they come across a yucky apple core. Who's going to pick it up? The Cat in the Hat takes them to meet the best cleaner-upper there is, Sandy the Sand Hopper! Sandy teaches them the difference between natural "garbage" and man-made trash, and how some animals use the natural garbage as food. Back at home, they put the trash in a garbage bag, and the apple core in the garden for Wriggles the worm to enjoy! Itty Bitty Water - Nick and Sally are about to dump out the water in their kiddie pool when The Cat stops them - water is too precious to waste even a drop! Off they go to the Drippety Dry Desert to meet three creatures who are experts at conserving water. Back at home, they think of other ways to use the water in the pool instead of just dumping it out - like giving Cat a bath!

Amazing Eyes - Sally and Nick are trying to guess which game Harvey the guinea pig might like to play with them. The Cat takes them to meet his friend Katie the Cavy, a wild guinea pig. But when they try to ask her, she playfully runs off! With the help of three different animals with very different ways of seeing, they finally find Katie and discover a guinea pig's favourite game - hide and seek! Water Walkers - Nick and Sally are waiting for Mom to come back so they can play in the pool. Cat suggests that playing on water is even more fun! But how? A trip to Splishy Splashy Pond to meet Walker the water strider will show them. Walker shows how he's able to stay on top of the water with the help of air bubbles as he journeys to the other side of the pond. Back at home, Sally and Nick are ready travel to the other side of the pool!

A Sweet Deal - Sally and Nick are having a hard time getting customers to come to their "cafe". What can they do? The Cat takes them to meet Eddy the honeyguide bird. Eddy shows them how he guides humans to bees' nests by making noise and putting on a show. Back at home, Sally and Nick follow Eddy's example and proudly serve their first customer! King of Swing - Swinging from a rope isn't so easy for Sally and Nick. Good thing the Cat knows the king of swing, Charlie the chimpanzee! In the Leafylafoo Rainforest, Charlie teaches them how to use their hands and feet to swing as they help him search for bananas, his favourite food! Back at home, Sally and Nick mimic Charlie and swing across the backyard to where Cat has a surprise snack waiting for them - bananas!

Stripy Safari - Nick and Sally set off on a safari with The Cat in the Hat to find all kinds of stripes. Along the way, Sally and Nick discover that stripes mean different things to different animals - the stripes of Jake the coral snake tells other animals to stay away, and Zelda and Zoran's zebra stripes help them to identify each other. And best of all, Cat discovers that his stripes are just right for him! Wool - Nick wants to learn how to knit a scarf like Sally, but they've run out of wool! A visit to Finola's Farm is the perfect place to get more. The Cat, Nick and Sally have fun helping Finola get the wool from Feleecia the sheep and then turning it into yarn. Now Sally can teach Nick how to knit his own scarf!

Amazing Eyes - Sally and Nick are trying to guess which game Harvey the guinea pig might like to play with them. The Cat takes them to meet his friend Katie the Cavy, a wild guinea pig. But when they try to ask her, she playfully runs off! With the help of three different animals with very different ways of seeing, they finally find Katie and discover a guinea pig's favourite game - hide and seek! Water Walkers - Nick and Sally are waiting for Mom to come back so they can play in the pool. Cat suggests that playing on water is even more fun! But how? A trip to Splishy Splashy Pond to meet Walker the water strider will show them. Walker shows how he's able to stay on top of the water with the help of air bubbles as he journeys to the other side of the pond. Back at home, Sally and Nick are ready travel to the other side of the pool!

A Sweet Deal - Sally and Nick are having a hard time getting customers to come to their "cafe". What can they do? The Cat takes them to meet Eddy the honeyguide bird. Eddy shows them how he guides humans to bees' nests by making noise and putting on a show. Back at home, Sally and Nick follow Eddy's example and proudly serve their first customer! King of Swing - Swinging from a rope isn't so easy for Sally and Nick. Good thing the Cat knows the king of swing, Charlie the chimpanzee! In the Leafylafoo Rainforest, Charlie teaches them how to use their hands and feet to swing as they help him search for bananas, his favourite food! Back at home, Sally and Nick mimic Charlie and swing across the backyard to where Cat has a surprise snack waiting for them - bananas!

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.

Dress Up Day - Nick and Sally are playing dress up, but oh no! Sally's princess dress has torn, and mom doesn't have any silk thread to fix it. Cat takes them to his good friend Mindy, the silk caterpillar. Mindy shows them how she makes silk. Sally uses the silk thread to fix her swirly twirly princess dress! Bathtime - Nick and Sally have been playing in the mud, and now they need to get clean! The Cat in the Hat knows some friends who have some very wonderful ways to bathe! In Bana Bana Savanah, they meet three different animals who all keep clean in very different ways. Even though it was fun to try bathing how the animals do, Sally and Nick decide that good old soap and water works best for them!

Trees Company - Sally and Nick are playing up in their treehouse when Nick's mom calls them for lunch. Nick wonders what it would be like to stay up in that tree all the time! The Cat in the Hat knows! Or at least he has friends that do. In Jimmer Jammer Jungle the kids learn how different animals spend their entire lives in trees. As neat as that is, there's one thing those trees don't have, and that's mom's home cooking! Now You See Me - Nick and Sally are playing hide and go seek, but Sally keeps getting found! The Cat takes the kids to meet the best hider ever, his friend Gecko! Through a game of hide and go seek in the jungle, the kids learn how Gecko not only hides, but how he runs and climbs. Now Sally knows how to camouflage herself so she won't be so easily found!

Rain Game - Sally wants to water the plants in her backyard, but it's hot and sunny outside. They need rain, and lots of it! Good thing the Cat in the Hat knows exactly where to go to get some: the rain forest! With the assistance of some toucans and the singing of howler monkeys, they explore each level of the rain forest, eventually reaching the top and the rain! No SSSweater is Better - Nick's favorite sweater is too small and he doesn't want to change it. The Cat in the Hat has a friend with the exact same problem! He brings them to meet Slyde the snake who shows Nick and Sally how he sheds his skin when it gets too small for him.

Flight of the Penguin - Sally and Nick are pretending to fly in their backyard. Oh wouldn't it be great if they really could? The Cat in the Hat brings them to meet his good friend Percy the penguin. After a fun race with a penguin and a bird, the kids learn that not all birds fly, but that doesn't mean they aren't fast! Let's Go Fly a Kite - Sally, Nick and the Cat are trying to fly a kite, but there's not enough wind. The Cat in the Hat takes them to Huff-Puff-Maguff where there's so much wind, they lose their kite! They chase the kite, using the wind to help them. When they finally reach it, the breeze helps to cool them down!

Rain Game - Sally wants to water the plants in her backyard, but it's hot and sunny outside. They need rain, and lots of it! Good thing the Cat in the Hat knows exactly where to go to get some: the rain forest! With the assistance of some toucans and the singing of howler monkeys, they explore each level of the rain forest, eventually reaching the top and the rain! No SSSweater is Better - Nick's favorite sweater is too small and he doesn't want to change it. The Cat in the Hat has a friend with the exact same problem! He brings them to meet Slyde the snake who shows Nick and Sally how he sheds his skin when it gets too small for him.

Flight of the Penguin - Sally and Nick are pretending to fly in their backyard. Oh wouldn't it be great if they really could? The Cat in the Hat brings them to meet his good friend Percy the penguin. After a fun race with a penguin and a bird, the kids learn that not all birds fly, but that doesn't mean they aren't fast! Let's Go Fly a Kite - Sally, Nick and the Cat are trying to fly a kite, but there's not enough wind. The Cat in the Hat takes them to Huff-Puff-Maguff where there's so much wind, they lose their kite! They chase the kite, using the wind to help them. When they finally reach it, the breeze helps to cool them down!

Incredible Journey - Nick and Sally are playing in their homemade Thingamajigger, when the Cat arrives to take them on a real adventure! Off they go to meet salmon Sam, who is returning to the pool where she hatched so she can lay her eggs. With the help of the Subber-e-blubber, they follow Samantha underwater, upriver on her incredible journey! Bamboozled - Sally needs to find a gift for her stuffed panda, Pammy. Who better to ask than a real panda? The Cat takes them to meet Zhu Zhu, a giant panda who helps the kids to discover all the wonderful things you can do with her favorite food, bamboo. Bamboo turns out to be a perfect gift for Pammy!

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!

Thump - Nick is trying to make his mother a surprise lunch, but she keeps coming into the kitchen! If only there was a way for him to know when she was coming. The Cat takes Nick and Sally to meet his friend Twitch the rabbit. Twitch and her bunnies teach Nick and Sally how to stop, look and listen for danger. Now Sally that can warn Nick when his mom is coming, they're able to surprise her with lunch! Squirreled Away - Nick can't remember where he put his yoyo. Cat offers to take the kids to meet his friend Bucky the squirrel who is good at both hiding and finding things! Nick and Sally learn how to use landmarks to help them remember where they put things. Back at home Nick, thinking like Bucky, is able to track down his yoyo!

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.

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!

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.

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!

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.

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!

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.

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!

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.

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!

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.

The Skin I'm In - Nick and Sally are playing super heroes when Nick cuts his finger. He wishes he had skin like a super hero. Oh but you do, says The Cat! And a visit to Dr. Giggles to learn all about how super skin is, is just the thing! By shrinking down really small, they discover teeny tiny hairs on our skin, how stretchy our skin is and slippery too! They even learn that old skin falls off and new skin grows. It even fixes itself when it's hurt! Skin really is super! Fishy Washy - Sally and Nick need to clean up the backyard. Cat has a friend who's an expert at cleaning, perhaps he can give them some tips! It's off to the ocean to meet this cleaner fish! They discover that Rufus doesn't clean the ocean, he cleans other fish! They watch as Rufus cleans one bit at a time, that's the trick! It's not so hard to clean up, especially when you have friends to help!

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.

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!

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.

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!

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.

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!

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!

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.