Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

Play Rock Tic-Tac-Toe, the perfect outdoor game for all ages. Help your child develop thinking skills and get away from the TV!

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

This science project teaches students to classify different shapes of leaves.

This science fair project idea investigates the hardness property of minerals.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

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

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

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.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Take advantage of the fact that ink and water don't mix and introduce your kid to suminagashi, a Japanese form of art.

Try this chemistry experiment with your curious kid and get some "shocking" results!

This fun science fair project idea helps students learn how acid rains are formed and explore how acid rain damages the environment.

This fun and crafty activity is easy enough for your child to lend a helping hand and makes a great indoor or outdoor game.

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

This season is a great time to explore the many shapes, sizes, and species of evergreen trees. Download our "field guide" activity and learn more!