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This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

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.

This science fair project idea identifies trees using a dichotomous key.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

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

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.

Making your own glass cleaner is easy, effective and inexpensive!

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

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This tricky building block challenge asks your learner to think creatively. They will work on their divergent thinking skills as they try to fill up an index card perfectly with building bricks.

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

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

Make a seed bomb and let your junior guerilla gardener spread flowers far and wide.

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

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

This science fair project idea determines what household items are good conductors of electricity.

Construct and experiment with a periscope using reflected light rays to gather an image.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Examine the effect of pressure on carbonation in soda.