Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

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

This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

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

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

Science fair project in which you will start a fire from scratch without using matches or a lighter.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

This science fair project idea explores whether cats can be trained in the same way that dogs can.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

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.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.