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.

Build a magnetic linear accelerator using a ruler, neodymium magnets, and small metal balls in this fun science fair project exploring magnetic propulsion.

This science fair project idea explores the different properties of matter.

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

Help your kids fall in love with nature by making a simple clay bird bath. Set it up in your yard and watch the animals venture in for a sip of water.

Science far project which determines whether the material of a baseball bat affects the distance that the baseball will travel.

Combine the science of physics with the fun of playing spy. Your young detective can make his own tiny looking glass. It's simple to make!

This science fair project explores different types of endangered frogs, and why some are endangered while others are not.

Check out this fun science fair project idea to explore fun facts about fruit juices and learn why do juices turn bad in the fridge.

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

This experiment will explore the possibility of creating an infinite object by hand.

Observe trends in the properties of writing materials over past 5000 years and extrapolate to future time. Prepare a table that compares writing material.

Did you know magnifying glasses are magic? This hands-on activity has kids using magnifying glasses to engage with the world around them and look close to examine what they find.

Research active ingredients in anti-aging creams. Test skin creams on volunteers, document the effectiveness of the creams with before an after photographs.

In this cool elementary school science fair project idea make a model to learn what happens to the Earth's surface when ice moves over land.

Is that seed alive or not? Here's an exciting way for kindergarteners to make a seed museum that your child can watch, using simple household materials.

Do males really prefer listening to male than female singers? Find out when exploring this science fair project!

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

This experiment evaluates if personality influences whether a person prefers dogs or cats.

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

Make a seed bomb and let your junior guerilla gardener spread flowers far and wide.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

Science fair project that determines whether brain size is correlated with intelligence.

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.