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Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

In this activity, your child will be challenged to make a tower using paper cups.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

Cleaning can be a chore, but not with this sudsy experiment!

Discover whether a metal will expand under hot water.

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

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

Will increasing the amount of salt in water effect how slow or fast the water freezes?

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

Create your very own scented hand sanitizer that will help your child to keep those nasty germs at bay!

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Is it a square or a circle? See if you can trick your friends with this zany science project!

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Magnets may hold up papers on the fridge, but is it the paper that attracts them? Find out more with this kindergarten science investigation.

This science fair project idea explores whether white light can be separated into different colors.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

Introduce your child to preliminary science concepts by challenging them to do this fun and simple cloud observation activity.

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!

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.