This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

This science fair project idea deals with the qualities of shade on a sunny day.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

Science fair project that determines whether mass and weight are the same or different.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Some fossils have been been preserved for billions of years! Help your kid understand how fossils are created and preserved with this crafty project.

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

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

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?

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.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

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

This experiment tests which gender is better at catching how a magician performs his tricks.

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

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