Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

This activity is a fun way to "go fishing" with your preschooler, while learning about the concepts of freezing and melting.

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

Construct batteries that make electricity from fruits with this fun science fair project.

Help your child build her very own science laboratory at home for experiments and science projects. This is a quick, easy, and fun educational tool!

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

In this activity your child will make a coiling snake out of simple household materials, and also find out why they coil.

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

Want to boost math and science learning? Take a bug expedition and give your first grader practice observing and charting what they see.

Celebrate April Fools' Day with a science prank that is sure to amuse...and educate too!

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Help your child create a tasty treat that will demonstrate exactly how frogs survive a freezing season.

This weather spinner will improve observation skills by encouraging children to examine and track weather details and patterns.

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

Challenge your young dinosaur lover to examine dinosaur footprints and then create their own dinosaur fossil in this hands-on activity.

Try this fun garden graphing project with your kindergartener this summer to give him a leg up in math and science while spending some valuable time outdoors!

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

This science fair project investigates why the number of visible stars changes from place to place.

Find out whether matte or shiny nail polish lasts longer.