What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

This science fair project idea examines which type of insulation holds in the most heat.

This science fair project idea investigates the hardness property of minerals.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

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

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

The goal of this project is to create an exciting topographical map out of dough.

This science fair project idea provides evidence that air is everywhere and takes up space.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

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

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

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

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

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

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

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!

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.

This science fair project will help students learn about non-vascular plants, such as mosses.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

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