It’s vaccination day at Sid’s school, and Sid and his friends are a little apprehensive about getting a shot. Thankfully, a very special nurse will be giving the kids their vaccination—Sid’s Grandma! Throughout the special episode, Grandma, Teacher Susie, Mom and Dad all do their part to make vaccination day a fun learning experience filled with music, games and lots of laughs.

Sid wants to know why his beloved yellow banana has turned brown and mushy. After exploring how fruits and vegetables slowly change, Sid learns that it’s natural for his banana to ripen and turn brown and mushy. Over time, fruits and vegetables decay!

Sid wonders if you really do have to brush your teeth every single day? At school, Sid discovers that our mouths are filled with different kinds of teeth that do lots of different jobs—like chewing our food! So it’s really important to keep our teeth healthy by brushing them every day!

Sid’s parents tell him to wash his hands to keep away germs. But Sid can’t see any germs on his hands, so why should he wash them? Sid and his friends learn that germs are so small that you can’t see them. And they discover that a great way to stay healthy and keep germs away is by washing their hands with soap and water!

Sid declares that he shall only eat Birthday cake for every meal! Sid and his friends discover that only eating cake would make their bodies feel terrible. Then they explore and learn that the best way to stay healthy is by eating nutritious food.

Sid decides to sit and watch television all weekend long. There’s just one problem with his plan: sitting around and not moving would make his body feel terrible. At school Sid and his friends learn that exercising is a really fun way to stay healthy! And it makes your body feel great!

If Sid doesn’t fill up his chore chart with stickers, he’ll never get a new Turbo-Mega-Rocket ship toy. So, Sid wonders, who needs charts anyway? After a day of investigating, Sid learns that charts are great science tools that help you compare and contrast all kinds of cool stuff like snacks, pets and even chores!

Sid wonders what is the best way to always stay healthy? At school, Sid and his friends discover that there’s lots of ways to stay healthy: washing hands to avoid germs, eating nutritious foods, brushing teeth and exercising!

Sid loves his little rolie polie bugs, but they’re so little he can’t figure out how they move. At school, he discovers an amazing science tool: the magnifying glass! Sid and his friends explore their world using the magnifying glass to make things look bigger, like freckles on their skin, little pebbles and rolie polie legs!

Sid brings home an estimation jar from school, filled to the top with seashells. He’s determined to guess how many there are, but he has a problem…there are too many shells to count! At school, Sid and his friends learn a new strategy for making their best guess -- estimation! Now Sid can estimate just about anything -- shells, toys, leaves and stars in the sky!

Sid is troubled…he wants to know how to measure a giant blue whale with his ruler. At school he learns a great new way to measure just about anything -- using the method of non-standard measurement! Sid learns how to accurately measure things with shoes, blocks, and even people!

Sid has quite a collection of science tools in his room: a ruler, an estimation jar, a chart and a magnifying glass. They’re all perfect tools for investigating and exploring the world, but Sid can’t figure out which one is his favorite! His friends help him discover that each science tool is amazing in its own special way.

When Sid’s shoes don’t fit, he declares that his shoes must be shrinking. Sid and his friends discover that it’s hard to see things growing, because growing happens slowly over time. It turns out Sid’s shoes weren’t shrinking -- he was growing!

Sid wakes up and discovers that his ice pops melted! This sticky situation leads him to ask,” Why do things have to melt?” After investigating at school, Sid learns that if liquids don’t stay in a really cold place, they slowly melt over time. He also discovers that liquids can freeze into solid ice and then melt right back into liquid.

Sid wants to know how his Grandma always makes perfect pancakes. They’re never too squishy or burnt. At school, Sid makes an important discovery -- heat changes things! This lesson reveals the secret of Grandma’s pancakes: she heats them on the stove for the perfect amount of time … not too much, and not too little.

Sid isn’t too thrilled that his favorite shirt shrunk, his shoes don’t fit anymore and his Mom changed his favorite toothpaste. He really wants to ask, “Why do things have to change?” Sid discovers that change is a natural part of the world as he and his friends review lessons learned from change and transformation such as decay, growth, and change caused by heat.

Sid notices that the tag in his shirt is really itchy, and he wonders why it isn’t soft like the rest of his shirt. At school, Sid and his friends explore and learn about the different textures around them: smooth, soft, bumpy and itchy…like his shirt tag!

Sid wakes up to his favorite smell in the world, pancakes. But the yummy scent is quickly taken over by a different smell when baby brother Zeke and his stinky diaper enter Sid’s room. At school, Sid learns how smells travel through the air and arrive inside the nose.

Sid tries on Grandma’s glasses, but they make everything look blurry. Sid explores his sense of vision, and discovers that even though Grandma’s glasses make things look blurry to him, they make things look clear to her.

Sid notices that when he covers his ears with his hands, everything sounds quieter. Maybe he has super powers! Sid explores his sense of hearing, and discovers that sounds travel through the air and into our ears. So it turns out Sid doesn’t have super powers, he was just blocking sound waves from entering his ears!

Sid wants to know about all his different senses. At school, Sid and his friends embark on a quest to explore vision, hearing, touch, smell, and taste!

When a wheel falls off Sid's favorite toy truck, he tapes it back on. But now the wheel won't spin, and Sid wonders how exactly wheels work? At school, Sid explores how wheels are simple machines that help move all kinds of things like cars, trains, tricycles, and even toy trucks!

Sid wonders how he can lift up his big, heavy stuffed animal dinosaur onto his bed. Sid and his friends explore how inclined planes are simple machines that make it much easier to push up heavy things...including big stuffed animal dinosaurs!

Sid believes that he has discovered a new invention to put toys away! Sid learns his invention is actually a simple machine called a lever, which is not only useful for launching toys, but can also help lift up really heavy things.

Sid learns about pulleys while pondering how to move a box of toys to his tree house.