What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.

Try the classic balloon-on-the-wall trick with your kid and watch static electricity in action.

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.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

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

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Create a brush pile to help wintering wildlife stay warm and cozy through the winter.

In this science fair project, students create their own miniature salt flats at home.

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

Explore aromas with your child and help boost her brain power with some fun and interactive science activities.

This science experiment tests if dog saliva can really help heal wounds.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

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

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 will help students learn about non-vascular plants, such as mosses.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

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

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

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

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.