In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Give your budding young observers a chance to discover simple machines at use in their own home.

In this science fair project you will make a model of a cell membrane using very simple material.

Here's a fun and simple activity to introduce your child to surface tension, and pull an awesome stunt in the process!

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

Set your young chemist up for an afternoon of science-fueled magic with a deceptively simple activity starring baking soda and vinegar!

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

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

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.

April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

What's the quickest way to separate salt and pepper? Let static electricity do the work! Your child will be fascinated by this simple experiment.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.

This science fair project idea identifies trees using a dichotomous key.

This science fair project idea determines what household items are good conductors of electricity.

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.

In this project, waves of vibrations are experimented with using water in glasses.

This science fair project idea determines what household items are good conductors of electricity.

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.