This science fair idea project identifies the active ingredients in soap and experiments with the properties of soap.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

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

This science fair project idea discovers which brand of bubblegum produces the largest bubbles.

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

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

This science fair project idea examines liquids of different densities.

This science project teaches students to classify different shapes of leaves.

This science fair project teaches students the differences between fruits and vegetables.

This science fair project idea compares biodiversity between drops of water.

This science project idea examines the effect of microwaving on various objects.

This science fair project idea investigates how color affects temperature.

This science fair project idea explores the egg's thin membrane.

This science fair project examines how seeds hitchhike on animals and clothing.

Take a dive into the candy jar with this yummy science experiment.

This science fair project idea produces varying pitches of sound.

This science fair project idea identifies trees using a dichotomous key.

This science fair project idea explores the different properties of matter.

How do organic materials become soil? This science experiment measures what materials biodegrade.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

This science fair project idea examines the reason boats are shaped and engineered.

This science fair project idea researches the effects of acid rain on plant growth.

In this science fair project, students make their own rain gauge to measure rainfall.

This science fair project idea investigates how magnetism can defy the force of gravity.

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

This science fair project idea identifies clouds as a means of predicting the weather.