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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.

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

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

Check out this cool science fair project on identifying rocks and minerals for kids.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Do you think heat can affect a plant's growth rate?

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

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.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

This classic children's game demonstrates how sound travels through air vs. through a solid.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

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

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

This science fair project idea explores whether color affects a person's emotional state.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Discover flight initiation distance as you play around in the park with this fun bird watching project!

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.