Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

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.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

Enjoy those warm spring and summer nights with your child while teaching some basic astronomy at the same time.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

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

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

This science activity will help your student explore the changes that occur to transform an egg from raw to soft to hard-boiled.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

This science fair project idea investigates the difference in reaction times between boys and girls.

This project can help prepare your child for a trip to the tide pools, or give him a way to remember some of the many creatures he saw during his visit.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Nature is the greatest teacher, and you can help facilitate the lesson! Here's how to create a supply backpack to get your kid ready for science action!

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

Grow these wheatgrass and alfalfa friends and watch their hair spring up in just a couple days!

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

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!

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.