What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this 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!

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

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

This science fair project idea determines which method of hand cleansing is the most effective.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

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.

The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.

In this science fair project, students create their own miniature salt flats at home.

The project is to investigate yeast fermentation and its results on hand of latex balloons.

Help your child plant a "tea garden": a garden made of herbs for making teas.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

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

This science fair project explores how osmotic pressure forces water through the root up into the plant.

This science fair project examines how seeds hitchhike on animals and clothing.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

This science experiment tests if dog saliva can really help heal wounds.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

This science fair project idea explores the different properties & interactions of sugar molecules.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

The project examines absorbent polymers absorbency in disposable diapers and their unique ecological problem to the environment.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.