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.

In this investigation, three different juices are tested to determine which juice contains the greatest amount of vitamin C.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

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

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.

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

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

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

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

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

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!

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

This science fair project idea explores the different properties & interactions of sugar molecules.

This science fair project idea identifies the properties of soap bubbles and invents a new or improved bubble solution.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

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

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

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

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

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.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.