In this science project, the center of gravity is explored.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

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

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

The project investigates how water and movement affects erosion.

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.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

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.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

This science fair project idea teaches to understand and explore the concepts of crystal formation and dissolving substances.

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

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

Make a backbone model to explore human anatomy and life science.

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

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

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

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

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

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.

The project investigates how friction affects motion by using different surface textures.

This science fair project idea investigates whether air has mass and weight.

Determine if gender affects the ability to identify different smells.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.