Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.

Crystals are a very special structure. In this third grade activity, your child will learn how to grow salt crystals.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

Find out whether optical mice are useful on all surfaces or if there are drawbacks to this supposedly superior solution to the traditional roller-ball mouse.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.

Help your child create a tasty treat that will demonstrate exactly how frogs survive a freezing season.