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Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Find out whether a longer airplane will fly farther or a wider paper airplane.

In this design challenge, your child will create a parachute for a small toy using typical household items.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

Unlike other seed sprouting projects, this one allows kids to compare five different sprouts (either 5 herbs or 5 flowers) by watching them grow in a glove.

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

Challenge your learner to design and build a city of their own in this creative engineering activity.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.