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

Clouds are formed when warm and cold air meet. Here's a way for kids to see it all up close!

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

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

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

Is your little scientist up for a rocky challenge? Let them make their own geode rocks using eggs and epsom salts!

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

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.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

Try this activity with your child to explore what happens to rain (and the living things that need it) when it becomes polluted.

Teach your kids about entropy with this fun, easy exercise, and teach your money to dance while you're at it!

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.

This science fair project idea explores the different properties of matter.

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

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

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.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.