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

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

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.

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

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!

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.

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?

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.

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.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

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

Combine the science of physics with the fun of playing spy. Your young detective can make his own tiny looking glass. It's simple to make!

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

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

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.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

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.

Grow these wheatgrass and alfalfa friends and watch their hair spring up in just a couple days!

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

In this design challenge, your child will create a parachute for a small toy using typical household items.