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Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

This science fair project idea examines whether boys and girls differ in reflexes.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

Construct and experiment with a periscope using reflected light rays to gather an image.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

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

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

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.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

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.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

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.

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.

In this fun activity, your child will create their very own solar oven to bake s'mores!

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.

The goal of this project is to create an exciting topographical map out of dough.