This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

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

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

This science fair project idea examines liquids of different densities.

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

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

The purpose of this science fair project is to build a basic radio.

This science fair project idea investigates how color affects temperature.

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

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

This science fair project idea produces varying pitches of sound.

This science fair project idea explores which fruit molds the fastest.

Construct batteries that make electricity from fruits with this fun science fair project.

This science fair project idea deals with the qualities of shade on a sunny day.

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

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

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

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

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

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

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

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

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.

Science fair project that determines whether mass and weight are the same or different.

In this science fair project, students create their own miniature salt flats at home.

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

Check out this cool science fair project on identifying rocks and minerals for kids.

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