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.

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

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

This project compares the strength of one, two, and three-ply toilet paper.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

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

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

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 fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

Introduce your child to the amazing, almost magical phenomenon of static electricity!

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

This trick uses vertical and horizontal forces to help your child to push apart your hands apart, no matter how hard you try to keep them together!

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

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

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

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

This science fair project idea provides evidence that air is everywhere and takes up space.

Let your second grader pay homage to an ancient Olympic tradition with this modern day Olympic wreath!

Do you think heat can affect a plant's growth rate?

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

How do organic materials become soil? This science experiment measures what materials biodegrade.

Using a toy race car kids create a visual model of the Doppler Effect.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

This science fair project idea experiments with spinning color wheels and optical illusions.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

Make a wish upon a tree with this craft that also helps your child learn more about Chinese culture.