Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

This science fair project idea determines the most effective method of preserving food.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

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

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

This science fair project idea explores whether talking to a plant will help it grow.

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

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

This project examines whether people's taste perception is influenced by what they see.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

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

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

This science fair project idea compares biodiversity between drops of water.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for “something that will improve the school.”

Find out whether a longer airplane will fly farther or a wider paper airplane.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

This science fair project idea produces varying pitches of sound.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.