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Why are some pennies shiny and others dark and dull? Find out with this cleaning copper coins experiment, which transforms dark pennies to bright ones.

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

In this experiment, you will be making your own paper flashlight by conducting electricty with graphite.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

Explore this fun middle school science fair idea to learn about photosynthesis and the key role of light in the growth of green plants.

Science fair project that determines the correlation between the ability of selected materials to conduct heat and a material's density.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Science fair project that evaluates how well clothing fabrics block UV radiation by examining the properties of different fabrics.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

How can you tell the difference between a spider and an insect? Your child will find out as he makes a tray of yummy creepy crawly snacks.

This science fair project idea examines whether people can decode scrambled messages.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Give your local birds a treat — and your young birdwatcher some fun — with this simple DIY bird feeder.

Future whistleblowers can learn about product safety standards with this exercise in writing and researching.

Should you use âFITâ Fruit and Veggie Wash or plain water to wash your produce? Find out in this science fair project idea.

In this experiment, you will evaluate whether or not a diet that is supplemented with "brain-enhancing" foods can help improve memory.

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?

Help your child make a beautiful homemade sandcastle that will last!

Consult mechanics, automotive specialists for advice. Build a real engine or a scale model. Test and demonstrate its mechanical properties.

The project researches how lubricants affect the mechanical advantage of a pulley.

Test whether plants can grow without sunlight and water.

This flexible activity for preschoolers features jellybeans, counting, coloring, and the five senses.

With a clear bottle and a few plastic straws, you can easily make a hummingbird feeder and demonstrate the effects of atmospheric pressure at the same time!

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.

Explore solids and liquids with your young scientist by making gluep, a goopy substance that can behave like both a solid and a liquid!

Children use their design thinking skills and powers of observation to create and construct a bird nest.

Science fair project that cultivates slime mold and monitors the stages of its development.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

This experiment explores the most common colors that appear among a sample of crossbred guppies.