My mushy banana: 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!

My shrinking shoes: 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!

My ice pops: 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.

The perfect pancake: 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.