Make a periscope with milk cartons and mirrors! This preschool activity is great for playing secret agent and learning simple physics.

Tin can phones offer something modern versions don't—a fun project to make with a friend, and a dramatic illustration of vibration and sound waves.

In this activity, your child will be challenged to make a tower using paper cups.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

Your preschooler can learn how to siphon water with just two bottles and a plastic tube in this fun, educational science activity.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

In this activity, you child will learn about how heat changes food. On the next sunny day, head outdoors to make a treat in an outside oven! Here's how:

Here's a simple science activity that will help your child better understand how wells bring us water.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!