In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

This basketball project explores the best way to make the perfect shot every time.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

In this experiment we will be determining whether birds prefer certain colors of seed.

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

Determine whether butterflies like to drink sugar water, salt water, or plain water.

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.

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

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

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.

Plants and light seem to be good buddies, but how far does the friendship really go?

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

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.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

In this design challenge, your child will make a bottle rocket using typical household items.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.