Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

In this science fair project you will make a model of a cell membrane using very simple material.

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

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

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

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

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

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

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

This activity challenges your student to use spatial reasoning and computational thinking to program multiple robots.

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

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

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

This project investigates the affect of storage temperature on microwave popcorn.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.