This classic children's game demonstrates how sound travels through air vs. through a solid.

Plants and light seem to be good buddies, but how far does the friendship really go?

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Start your toy engines -- this is going to be a fast and friction-filled race!

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

Discover whether a metal will expand under hot water.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

This biodiversity project examines the biodiversity in your own backyard.

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

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

Using a toy race car kids create a visual model of the Doppler Effect.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

In this science fair project, students use the streak test to tell minerals apart from each other.

This science fair project idea investigates the hardness property of minerals.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.