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

Combine your child's natural curiosity with his developing classification and writing skills by helping him create a backyard field guide.

By using static electricity generated from their body, a child can cause a small fluorescent lamp bulb to light up!

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot navigate around several obstacles.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

Science fair project in which you will start a fire from scratch without using matches or a lighter.

What's cooler than an explosion? Not much! This simple science experiment lets kids build their own pop rocket. So put on your safety goggles and let her rip.

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

This easy at-home experiment is a great way to "see" science.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

Is your little scientist up for a rocky challenge? Let them make their own geode rocks using eggs and epsom salts!

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.

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

Did you ever think you could make colors disappear right before your eyes? This science experiment is just like a magic trick: now you see it, now you don't!

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

A simple science experiment exploring the physics of water pressure that's been amazing people since Medieval times.

Play this flashlight game with your child to teach him about objects that are transparent, translucent, and opaque.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

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 a compound microscope? Kids find out by making one of their own in this cool science fair project.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Discover whether a metal will expand under hot water.

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.