This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

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

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.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

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.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

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.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

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.

This science fair project idea observes products available in the school cafeteria and waste produced by these products.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

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?

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

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

Start your toy engines -- this is going to be a fast and friction-filled race!

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

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