Which battery lasts the longest? In this science fair project, kids will test popular brand name batteries like Duracell and Energizer against generic brands.

In this science fair project, students make their own rain gauge to measure rainfall.

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

In this design challenge, your child will make a bottle rocket using typical household items.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Science fair project that examines how light wavelengths affect photosynthesis in the aquatic plant: Elodea.

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

Kids love the dramatic Mentos and Diet Coke experiment conducted in this awesome science fair project.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

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

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

This project examines Newton's First and Second Laws of Motion with a bicycle and water balloons.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Have your child kick off their summer vacation by making a miniature water slide!

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

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

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

The project determines the forces that cause paper airplanes to fly and determine which type of paper airplane flies the farthest.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

Use a dichotomous key to identify plants or animals.

Discover how and which salt melts ice the quickest.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Check out this cool science fair project on identifying rocks and minerals for kids.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

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

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.