Start your toy engines -- this is going to be a fast and friction-filled race!

Test your friends to find out if you can replicate the placebo effect's incredible results.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

This science fair project idea explores how length affects the weight a bridge can hold.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

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

In this experiment you will replicate the mummification process by making a hot dog mummy.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

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

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

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

This science fair project idea investigates if fats add to the flavor of food.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

In this project children practice the scientific method while playing with puffy paint.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

Learn all about balance and motion as your child designs a corn maze!

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

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