The objective of this science fair project is to analyze the effects of salinity and temperature on water.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

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.

What happens when colored beams of light mix? You might be surprised.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

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.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

How powerful is the reaction between baking soda and vinegar? Find out here!

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

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

Teach kids about a fun way they can remember this more efficiently- the power of mnemonics. Kids will be amazed.

Slip some science into storm watching with a homemade rain gauge!

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

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

Teach your child how butter is created by shaking up cream the old-fashioned way.

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

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

Here is a quick experiment you can conduct at the playground to introduce or reinforce the concept of Newton's First Law, The Law of Inertia.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

Set your young chemist up for an afternoon of science-fueled magic with a deceptively simple activity starring baking soda and vinegar!

This science fair project idea explores whether talking to a plant will help it grow.

This science fair project idea explores whether cats can be trained in the same way that dogs can.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!