Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

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

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

This project investigates the affect of storage temperature on microwave popcorn.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

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

Find out whether putting something on top of a plant will inhibit its growth.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

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

Science fair project that examines condensation and the conditions needed in order for dew to form.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Do you think heat can affect a plant's growth rate?

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

This science experiment has students test whether a snail moves faster on concrete or dirt.

In this experiment you will replicate the mummification process by making a hot dog mummy.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.