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

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

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?

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

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!

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

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

This science fair project teaches students about wilting and browning of salad greens.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

This science fair project idea explores the different properties & interactions of sugar molecules.

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

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.