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In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

This conservation of energy demonstration shows why the first hill is the highest on a roller coaster. Learn more about potential and kinetic energy!

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Compare the amount of ozone in various locations with this science fair project that will have your kid create her own ozone strips!

Science fair project in which you will create your electricity by making a homemade battery using salt water, a nail, and a copper wire.

How powerful is the reaction between baking soda and vinegar? Find out here!

Wreath ornaments decorate your Christmas tree and act as a fun sensory craft for preschoolers. Make wreath ornaments with your child this holiday season.

This science fair project explores how salt and sugar affect the melting rate of ice in water.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

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

Discover the interactions of synthetic dyes and natural dyes on natural and artificially-made fabrics.

This science project challenges students to study the salt content in tap water and learn about electrochemistry.

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

Science fair project that examines the physical features of elephants and butterflies and draws conclusions about their similarities.

Your preschooler will engage their senses by making a scented pumpkin to decorate your house.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

In this science fair project, students will use four different household objects to see which ones form the most or best crystals.

In this experiment, students create music with subliminal messaging to try to influence people's decision-making.

This science fair project investigates why the number of visible stars changes from place to place.

This activity challenges your student to use spatial reasoning and computational thinking to program multiple robots.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

Explore the best way to store popcorn kernels. It examines the impact of moisture and temperature on unpopped kernels.

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

Science fair project which measures the amount of heat energy released by a burning candle by calculating how many calories of heat it emits.

How do crystals form? In this science fair project, students will use three different saturated solutions to see how different minerals form crystals over time.

Thermometers are how we measure temperature, and we've all heard the terms "centigrade" and "Fahrenheit" tossed around, but what do they really mean?

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.