The Cat in the Hat Knows a Lot About That!

Nick and Sally are making their “Best Ever Yummy For Your Tummy” muffins when they realize they don’t have enough flour. Cat knows just where to get more – Finola’s Farm! With help from Cat, Sally, Nick, and the Things, Finola harvests the wheat then shows them how to turn it into flour. Now that they have enough flour, they can finish making their muffins!

When Sally and Nick have difficulty sneaking up on Nick’s Mom to surprise her, The Cat brings them to meet some great sneakers - three big cats in particular. The kids learn to be patient from a snow leopard, speedy from a cheetah, and the trick of distraction from a lion. Back in Nick’s yard they sneak up on his mom and surprise her! Then Nick and Sally are surprised when the best sneaker sneaks up on them – The Cat!

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.

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. Best of all, they meet a desert chipmunk, Rocky Mountain iris, and a bumblebee and the Cat discovers that his stripes are just right for him.

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.

Sally and Nick pretend 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.

Cat takes the kids to Splishy Splashy Pond to meet Walker the water strider, who shows them how he can stay on top of the water with the help of air bubbles.

Three different animals with very different ways of seeing help the kids find a missing guinea pig.

The Cat takes the kids to Drippety Dry Desert to meet three creatures who are experts at conserving water.

Sandy the Sand Hopper teach the kids the difference between natural "garbage" and man-made trash.

Nick and Sally can't seem to find Harvey the guinea pig. They find the Cat in the Hat instead! Cat suggests that Sally and Nick might find Harvey by meeting three friends who always do things differently - like a bird that runs instead of flies, or a cat that swims, or a fish that walks on the mud! Nick and Sally are sure to find Harvey now - by doing it differently!

Sally and Nick are trying to guess what they'll be when they grow up when the Cat drops in for a visit. Cat is sure Nick and Sally will never guess what his friend Puggle will be when she grows up. When they see her, they start guessing right away! A frog? A duck? No, a beaver! They discover that, while Puggle may have some similarities to other creatures, she will grow up to be a duck billed platypus!

For Show and Tell at school, Nick and Sally must bring something from their favourite season. But how can they choose which is their favourite? The Cat in the Hat takes them to the magical Garden of Seasons, where they can visit any season they like, any time they like!

For Show and Tell at school, Nick and Sally must bring something from their favourite season. But how can they choose which is their favourite? The Cat in the Hat takes them to the magical Garden of Seasons, where they can visit any season they like, any time they like!

Swinging from a rope isn't so easy for Sally and Nick. Good thing the Cat knows the king of swing, Charlie the chimpanzee!

Sally and Nick are having a hard time getting customers to come to their "cafe". What can they do?

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!

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!

Nick and Sally want some nice cold lemonade, but there's no more ice cubes in the fridge. A trip to Freeze-your-knees Snowland will fix that!

Sally and Nick are getting their hair cut today; maybe they should try new hairstyles! A trip to meet three of Cat's friends (and some styling help from the Wig-o-lator) will help them decide!

Nick and Sally are going to make a leaf collage of Cat, but the leaves they have aren't the right shape, they need different ones. It's off to Kaloo-Kalee for some leaf collecting!

Sally and Nick are planning to camp out in the backyard, but there are some scary noises out there! Not to worry, The Cat's friend Minnie Meerkat can teach them all about camping safe.

Nick and Sally are playing when their ball gets caught up high in the branches of a tree. They meet Cat's friend Treetop Tom in the So Sunny Savannah.

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.

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.

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!

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.

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.

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. Why don't they go meet King Cecil the Seahorse, he takes all his babies wherever he goes!

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.

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.

Cat introduces Nick and Sally to Whiffy the skunk, 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.

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.

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!

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.

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! Nick and Sally are pretending to be lost adventurers when Sally wonders what to do if you really do get lost.

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.

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.

Sally and Nick are going on an adventure, but how are they going to get there? Skateboard? Train? Rocketship? They just can't decide! Until Cat suggests they see how trees send their seeds on trips. They follow different seeds as they travel through the air, float on the water, and hitch rides on animals.

Nick has spotted a tiny ladybug, but Sally has found an even smaller ant! And there's nothing smaller than an ant. Or is there? Cat takes Nick and Sally to meet a variety of single-celled creatures.

Sally needs to find a gift for her stuffed panda, Pammy. She discovers 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.

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 Samantha, the salmon who is returning to the pool where she hatches so she can lay her eggs. With the help of the Subber-e-blubber, they follow Samantha underwater, upriver on her incredible journey.

Nick and Sally are sitting down to breakfast but have run out of milk. The Cat arrives to take them to Finola's Farm to have breakfast with Finola. First they learn how to milk a cow, then they discover that the milk from cattle can be made into butter, cheese, and ice cream, and even into other derivates.

It's Valentine's Day and Nick and Sally disagree hotly on how to decorate the card they're making for the Cat. This means they aren't really best friends—The Cat takes them to meet Sheldon, a tortoise who knows all about friendship. They learn that Sheldon's best friend, a finch is completely different from him and that being best friends doesn't mean you always have to agree.

Sally's little maple sapling hasn't grown any bigger. To discover why, the Cat in the Hat takes the kids to meet Dr. Twiggles. With the help of the tree doctor and his songs, Nick and Sally discover how trees eat through their leaves and roots. They also learn that trees grow very slowly. A few more years later, their maple sapling will grow into a maple tree.

Sally and Nick are so excited to go ice skating tomorrow, that they can't fall asleep. The Cat's friend Boris the bear can help. Off they go to the Gleep-sneep Woods to learn how Boris gets ready to take his long winter's nap. Back at home, Nick and Sally follow Boris' advice, and follow their own bedtime routine to get ready for bed. With the help of a bedtime story from Cat, they quickly fall asleep.

Nick and Sally are playing soccer when their ball goes through a hole in their net. Luckily, the Cat's friend Mabel is a spider who knows all about weaving—maybe she can help them. Mabel, with the help of Cat and a song, teaches Nick and Sally how to weave a web. Back at home, they use Mabel's advice and fix their net, and just in time for Cat to score a goal, if only if it wasn't sticky.

Nick and Sally can't find their sled, buried under the snow. The Cat takes Nick and Sally to the Jingly Bell Forest to see Magnus, the reindeer, who is great at finding things in the snow. In it, Magnus shows them how he digs with his feet and shovels snow with his antlers. When Nick and Sally find Magnus' old antlers, they can shovel snow now and also find their sled. Meanwhile, Fish tries to find the perfect Christmas tree.

Nick and Sally have a backyard picnic when they discover their last strawberry has gone missing... and the Cat doesn't know who is it—his friend Cluey Looey can help them and they are off to Muddyfeet Waterhole where they learn about how the differently shaped feet, paws, or hooves of various animals make differently shaped footprints (like an elephant, a bee-eater and a baboon). Back home, they follow the prints and discover their strawberry was taken by a squirrel and, luckily, the Cat has more to discover.

Nick and Sally are painting a picture of a rainbow but don't know what are the colors that are used for the picture. The Cat takes them to Color-ga-lore to meet King Kaleidoscope, an expert on rainbows: a song teaches them the proper color order and after that a silly spray of water leads them to discover how to make their very own rainbow.

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!

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

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 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!

However, Nick accidentally tore his 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, 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. Back at home, Nick's new shirt is all better now.

Sally and Nick are practicing to be in a three-legged race, but walking on three legs is hard. If anyone knows about walking, 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.

The kids are playing with glass marbles, until one of them rolls away. It's Nick's "extra luck never miss marble”, Cat will take them to a sandy beach that's full of marbles. 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 are trying to walk across a beam in their backyard, but are having trouble staying on it. With the help of the Cat, they off to meet 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 to try this at home. Using broomsticks to help them stay balanced, Nick and Sally are able to cross the balance beam. Just in time, Nick and Sally have some yummy bran berry muffins.

Sally is playing dress-up, but her favorite hat no longer has any feathers on it. The Cat's good friend Puranjay might be able to help. He's a peafowl who lives in Feathery Flats, he has plenty of feathers. Sally collects the feathers that have fallen out of Puranjay and discovers that each one has its own distinct job. But it's his tail feathers that are just jazzy and snazzy enough for her hat because they are the most fabulous feathers.

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. They all try but just can't figure out how a cricket makes its noise, 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 comblike, 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.

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, like a lionfish, a sea snake, a jellyfish, and a zebra sole. 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.

The kids are playing dress up, 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 in the wrong shape. The correct is that everyone has the same shaped feet. The Cat takes them to the Jungle of Bingle-Bungle Boo to meet his friends Emily the common teal, Mikey the lemur and Greg the gecko. They see that animals have differently shaped feet to help them do different things. They need the right feet for the right job.

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 is nice and safe in his own little den.

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, the best part is using recycled paper.

In Nick and Sally’s pool, then both spots a frog, they have to get him out but can't catch him. Cat's good friend Penny the pelican, he can teach them how to catch things in water. Along the way they meet a gannet 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 are trying to wrap a present for their moms. Meeting Cat's good friend Gina the giraffe weevil, will help out. 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.

Dragons don't really exist, but Cat knows some lizard friends who are 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 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, they 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.

Nick and Sally have been running around the backyard and now their chests are thumping along. The Cat explains that this is their hearts booming. A visit to Dr. Giggles, he 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 slow down when he stops. With all this running around, their bodies are now making another sound: rumbling tummies.

It's cold outside, but Nick and Sally want to keep playing to stay warm out in the cold. Cat's friend Lars the lemming lives in the Wundra-Bundra-Tundra. It's cold out, but with Lars' fur coat, he doesn't even notice and 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, Nick and Sally wear two winter coats to help them keep warmer than hot chocolate.

It's a race to the treehouse, but Nick and Sally wish they could go as fast as an airplane. "How about a peregrine falcon?" asks The Cat. His friend Perry the peregrine falcon, the fastest creature in the world, 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.

Sally is looking after some baby hamsters, she and Nick hold them right. Therefore, different animals hold their babies in different ways. A trip to Ozzie-Wozz Outback will help them, Cat has some friends who know all about carrying babies. First, they meet Wilma the wolf spider, who carries all her babies on her back. Then it's off to see Dilly the saltwater crocodile, she carries her babies in her mouth. Last stop, they meet Coco the koala who uses a pouch to carry her little one, who helps Nick and Sally. All the babies were happiest with their moms, so they'll just leave them all together.

Nick and Sally are wiggling and jiggling like the jelly mould in front of them. But they can't quite wiggle the same way, "Bones of course!" announces the Cat. Bones keep their bodies from being wiggly and jiggly. Meanwhile, they visit 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 the all important bones that help protect our squishy bits. Even though they won't let you wiggle and jiggle like jelly, skeleton bones are important.

Sally, Nick and Cat are playing with their toy rocket. Using the Cat's Whoa-Look-At-It-Go-Launcher then he shoots the rocket up to the sky. But now they need to go find it. Off to the top of the sky, they pass the treetops and the mountains. He answered "where is the top of the sky?". They meet a treehopper and a yak until 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. Although they can't launch their rocket to the top of the sky, launching it to the moon is just as cool.

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.

However, Nick's hungry tummy is rumbling, they learn our stomachs make noises when they're hungry. A super shrunken trip into Thing One's stomach will be a better look. 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.

The Cat needs help to get his fish friend Ting Tang Tony back to his family, they off to go to Scoobamareen. 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, because you never know when the Cat might need help again. The coral gets harmed by a crown-of-thorns starfish, after all, he was actually a palette surgeonfish.

Nick and Sally are trying to guess it must be the enormous elephant. The toughest of all is a teeny tiny tardigrade, they 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 and he really is the toughest of all.

The Cat takes Nick and Sally to learn about cocoa beans from Princess Lottachoca. 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 mold and cool it.

Nick and Sally discover how Matilda and Marlon, the manatees move slowly, yet gracefully underwater and are at risk as a result from humans in boats.

Animals like a giraffe, a mamba, and a chameleon use their tongues in many ways to detect, catch and eat the food they need.

Unlike many insects, beetles can't as a rule — take off instantly to the air. So many beetles like a stag beetle, a click beetle, and a bombardier beetle have evolved means for "buying time" when under attack.

Nick and Sally hear chirping but can't find where it's coming from. If only they had better animal ears like an elephant, owl, and a fox. When the Cat is around, he takes them to meet these animals with amazing ears. Back home the kids used what they learned from their new friends to find the sound – a teeny tiny cricket.

Nick keeps trying to surprise Sally, but he just can't do it. The Cat takes Nick and Sally to the Skippylarito Fields to find a real surprise out there, where the Cat shows them a special Mexican jumping bean that suddenly moves. With a shrunken Thingamajigger, they go inside the bean and meet the moth larvae that lives there. They learn that it's really the moth that causes the bean to move.

Nick and Sally are playing on a climbing frame but just can't manage to get to the top. Cat tries to show them how it's done but he can't do it either. The Cat takes Nick and Sally to see Timmy Tippy Toe, an expert climber and the klipspringer, who teaches them to use their hands and their feet, and now they can reach the top of their own mountain.

Nick and Sally are wondering why their ball is so bouncy. Fish tells them because it's made from rubber, and rubber comes from trees. The Cat is about to ask the expert, Dr. Twiggles, who shows them all just how rubber is made and all the wonderful things rubber can make; and it turns out Fish is right.

It's too hot to play outside, not according to the Cat: The Cat's friend Hilda the hippopotamus 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.

Nick and Sally want to keep playing, but it's getting dark. The Cat takes Nick and Sally to see Astronaut Audrey, who answers why does nighttime have to come. With a trip to her space station and a large model of the Solar System, the children learn that it's the Earth's spinning near the Sun that makes it night or day.

Sally and Nick are playing hide and seek, but Nick keeps sneezing. Good thing the Cat's friend Cluey Looey will be able to help them. The Cat takes Nick and Sally to Muddyfeet Waterhole to find the Cat's friend Cluey Looey (able to help them), where they discover that Louie is having the same problem: nothing a trip inside Louie's nose can't solve. Inside a super shrunken Thingamajigger, Nick, Sally and Cat discover a dog hair which causes sneezing and what they can do to avoid it from happening.

Nick and Sally are trying to jump high enough to touch the Moon. However, gravity is — according to the Cat — "what goes up must come down"; to show them just what gravity is, that means a trip to the Moon. That's where they meet Astronaut Audrey who takes them for a space walk to learn all about gravity.

Nick and Sally are trying to build a sandcastle but the sand is either too dry or too wet. The Cat takes them to see the Song Flower Sisters, who need just the right mixture of water and soil before they will sing.

Sally wants to make a perfect mobile with four identical rubber ducks, but she has only three ducks. The Cat takes them to The Bazaar at Balancia Point, where everything is in balance and has to remain so. Sally finds out there is more than one way to balance things.

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 figure out which cookie it is 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. Along the way, the Thingamajigger runs out of Go-Go-Go juice and they have to find other ways to make it go.

When Nick and Sally don't understand why one toy car goes faster than another, the Cat needs their help to move some big pictures. Along the way, they find out about how to make things more aerodynamic.

Sally invents a secret treehouse handshake, but Nick can't remember the sequence. 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 wonder if they can walk on a cloud, and the Cat takes them to Mount Knowmore. As they climb up, they discover hard surfaces and watery surfaces and walk through fog. And when they get to the top, they know more about walking on clouds.

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.

When Nick drops the mail bag into his train set, his fingers are too big get it out. Cat shrinkamadoodles them so they are small enough to be in the train set. But when the Thingamajigger falls out of reach, they need the right sized tool to help them out.

Sally thinks that the three stick she has are not enough to make anything. Cat takes them to a place where they can get more sticks. Along the way, they discover just how many things you can do with three sticks.

Nick's new plans 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.

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 is a much easier way to move that log than by lifting it.

Nick and Sally are playing musical instruments and notice that Fish's water is rippling. Cat takes them to the Jingly Jungle for a concert by the great Vibrato. They discover that sound and vibration go together.

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 try to save a bubble 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.

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.

The kids want to make a great snowman but the clothes they have 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.

When Nick's magic trick causes his toy car to disappear under the porch the Cat takes them to Arcade Island to win a Gasper-ma-clasper. But instead they find out the magic of bumping things around.

Sally loses her special bead in the sandbox and they can't find it. The 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 filtering works.

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 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.

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 about levers.

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 an arcade where they discover what will (and won't) be attracted to a magnet.

Sally is trying to make a vase for her mother but each one she tries falls over. The Cat takes them to Blueprintia and they discover what they can learn by designing before building.

Nick and Sally are frustrated by a puddle that always forms at an inconvenient spot on the sidewalk. They go to a water park and learn that water always seeks the lowest level.

Nick wants to create a new home for the cricket in their backyard, but the cricket won't go in. The Cat takes them on a journey but has to make an emergency landing on Lagoona-Maroon where they discover what they really need when it comes to making a shelter.

When Nick's favorite flyer gets stuck in the tree, Nick wishes he could jump really high and retrieve it, but gravity holds him down. Cat takes them to Gravity Drop where they discover what happens when there is more or less gravity. Nick figures out how to use gravity to get his plane back.

Sally wants to fly her kite but can't seem to work out the timing to get the wind right – you can't see the wind. The Cat takes them to Windnasium where they learn to see wind in all kinds of ways.

Nick is trying to learn how to ride his bike and in Balencia, he discovers the things to keep in mind when you are trying to maintain your balance.

Nick gets some new train cars for his train set and wants to add them to his train, but the magnets won't connect. The Cat takes them to a magical magnets world where they learn how poles attract or repel.

Nick and Sally are in the treehouse making funny faces at themselves in the mirror when they notice a bird flying back and forth into the tree branches. They discover that the bird is building a nest and they want to get a closer look but can't do it without disturbing the birds. The Cat takes them to a mirror world where they learn how reflections work and they concoct a kind of periscope that allows them to watch the bird without disturbing it.

Nick and Sally need a strong piece of string to pull their train, but it breaks, and they don't have anything stronger in their craft box. The Cat takes them away, but the Thingmajigger malfunctions and they have to make an unscheduled landing. It turns out they've shrunken and are inside the craft box, where they discover that they can create a stronger string by braiding several strands together.

Nick unintentionally loses Sally's bouncy ball, they go to Ballaballo and learn how different balls are made of different materials that make them bouncier.

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 Shadowland where they learn about how the position of the light can make shadows grow or shrink.

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.

The kids want to get a trunk up into the treehouse and go to the Machine-a-Ma-Zoo where they're introduced to some simple machines, but learn about the pulley.

Nick discovers that Sally can't hear him when he yells from his bedroom window if their bedroom windows are closed. The Cat takes them to the Soundy Sea and they learn that sound travels in waves.

When Sally destroys Nick's model of a mountain, the Cat takes them to meet Sara of Serendip, an inventor who helps them understand that you can make new discoveries through your mistakes that involves mixing colors and making a volcano.

Nick is in pursuit of finding out how to build a drawbridge. In Spansylvania, they meet a dragon who's in pursuit of them – and along the way they find out that some materials are better suited for bridges than others.

When Nick and Sally's boat sinks, they need to build another boat, but don't know how. At trip to Floating Island helps them discover that along with needing the right material, you also need to make the shape of your boat float.