Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

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

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

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

Satisfy your sweet tooth with this easy summer activity! Make homemade ice cream and let your child practice his science skills.

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

Is your child a young ornithologist in the making?

This science fair project idea investigates how the shape of an object affects drag.

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

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

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

Slip some science into storm watching with a homemade rain gauge!

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

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

Create a three-dimensional X-ray of your child's hand in this simple modeling activity. All you need to get started are black paper and drinking straws

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

In this activity your child will create their very own marble maze!

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

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

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

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