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

Build basic projector out of ordinary materials. Create several color transparency slides, demonstrate your creation.

Study history of aerodynamics of arrow design to create a perfect arrow. Test arrows by shooting at an archery target.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

Free science fair project idea that examines the ergonomics of your environment. Redesign your living space to be better suited to your lifestyle.

Kindergarten algebra is a lot different than high school. In kindergarten math, algebra means grouping like things, or noticing what doesn't belong in a set.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

Consult mechanics, automotive specialists for advice. Build a real engine or a scale model. Test and demonstrate its mechanical properties.

The garden is the perfect place to practice math and science with preschoolers. Get digging (and counting, sorting, observing at the same time!)

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

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.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

This science fair project idea addresses tempo, and whether faster or slower music works better as a study aid.

This science fair project idea determines if material and tensile strength of different types of skateboard wheels affects the velocity of the skateboarder.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Measure the speed of the earth's rotation using protractors and meter sticks. This science fair project measures the angle of the sun in relation to earth.

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

This science fair project idea tests the efficiency of short term memory.

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

This science fair project idea measures physical dexterity as a function of temperature.

Get a cool science fair project idea for middle schoolers on the effect of adding sugar to the growth of green plants.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

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.

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

Have your child kick off their summer vacation by making a miniature water slide!