Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

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

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

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

Cleaning can be a chore, but not with this sudsy experiment!

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Want to spark your third grader's interest in gardening? Help him make popsicle stick fairies to decorate an enchanting garden oasis.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

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.

In this activity your child will create their very own marble maze!

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

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.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Instead of the traditional egg hunt, try this creative variation that will result in a beautiful Easter garden.

Your child can help your family pet take a breather, and help herself relax, too, with this soothing activity.

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

In this activity, your child will be challenged to build a tall tower out of building bricks! The instructions include questions prompts to guide students through the design challenge.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

Make a wish upon a tree with this craft that also helps your child learn more about Chinese culture.

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.