Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

The objective of this science project is to determine the length of time for different seeds to germinate.

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

This science fair project idea produces varying pitches of sound.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

In this science fair project, students use the streak test to tell minerals apart from each other.

People have favorite flavors, but what about ants? Which ant food is the most popular?

This science fair project teaches students about wilting and browning of salad greens.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

This simple project makes young children aware of their sense of smell and its capacity for providing them with information about their world.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.