This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

Learn about this simple machine and make a pulley of your own to use for fun science trials.

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.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

This science fair project investigates why the number of visible stars changes from place to place.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

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

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

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

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

Set your young chemist up for an afternoon of science-fueled magic with a deceptively simple activity starring baking soda and vinegar!

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.