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

In this science fair project, we will test how different kinds and shades of hair respond to bleach.

Research overview of architecural acoustics. Design and build a whispering wall from wood or plastic. Test which materials work best.

This activity will help your child review science concepts, learn new ones, and become familiar with examples of various concepts in science. Plus, it's fun!

Test of the effect of exercise on rote memory. Prepare a single list of 40 randomly chosen words. Have volunteers recall as many words as possible.

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!

For a fun family activity to introduce your child to genetics, have your child go on a search for dominant and recessive family genes!

Design and build a scale model representing living tree architecture. Then build a full-size version using one or more lives trees, and test your creation.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

Your child can create his own texture tree, experimenting with design during the process. The result will be a beautiful addition to your holiday decorations

Science fair project that examines the benefits of the plant enzyme: pectin methyl esterase (PME). Where is PME found in the plant? What does it do chemically?

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

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

The objective of this science fair project is to determine the rate at which participants can respond to different patterns.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

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.

Science fair project that identifies the nature of ionic and covalent bonds and determines how ionic and covalent compounds differ.

Who needs paint, glitter, or crayons when you have natural art supplies right outside your front door?

Find out whether freezing or refrigerating destroys more bacteria. This is essential to consuming safe and germ-free food.

Determine which seeds are most likely to survive harsh winter conditions (low temperatures).

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

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

Science fair project that determines the effect of concentrated mental effort on physical performance levels.

Science fair project that tests whether cats have a preference for organic food.

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

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

Investigate the kinds of memories we tend to store and the emotions we store with them. Determine if memories have a strong emotional component.

This middle school project examines the strength of horizontal versus vertical pointing eggshells.

Science fair project that helps visualize how the human brain functions by constructing a model of a brain.