Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

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

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

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

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

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

This biodiversity project examines the biodiversity in your own backyard.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

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.

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

This science fair project teaches students about wilting and browning of salad greens.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.