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The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

This project examines the amount of saltwater required to affect the growth of plants and subsequent effects on growth and development.

The purpose of this project is to determine if there are fluctuations in the rising and the setting of the sun and the position of the earth as it rotates.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

Think about the adaptive utility of an important aspect of our physiology.

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

This middle school science fair project determines whether DNA is most easily extracted from under-ripe, ripe, or over-ripe strawberries.

Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

This science fair project explores different types of endangered frogs, and why some are endangered while others are not.

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.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

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.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

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

Use a dichotomous key to identify plants or animals.

Science fair project idea that measures fuel efficiency in cars. Calculate cost per mile by comparing fuel cost and consumption data.

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

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

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

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

This project examines the affect of temperature on viscosity and surface tension of different liquids.

This science fair project determines which of two chemical agents can be used to release the drug (tea) from hydrogel crystals.

This science project researches the correlation between barometric pressure and wind velocity.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Word color association is just a fancy way to talk about the way we connect colors with words.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!