Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

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.

If your mom likes flowers, make her a sweet gift that she'll treasure with this fun craft, a pretty Pressed Flowers Card!

Explore how you can achieve magnetic levitation with the Meissner Effect! This cool science project explains formation and applications of a superconductor.

Teach your creative second grader about proportions, animals, and proper cutting methods with cucumber carving.

The goal of this science fair project was to examine how different angles of decline affect the tipping point of a vehicle.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

In this middle school activity, your child will learn how to press plants and create her very own herbarium, or plant library! Here's how:

This experiment provides a graphic illustration of the chemical reaction that occurs when you activate a hand warmer.

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.

Hold a magnet marathon! Explore the power of magnets with your kindergartener in this entertaining and simple science game.

Learn about how sugar fermentation and growing yeast in this easy science project! Yeast is a eukaryotic microbe that puts the fun in fungus!

Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!

Bring the fun of gardening indoors! By stuffing a simple pair of pantyhose with a few grass seeds on top, your child can grow her very own plant pet.

Science fair project which uses a camera to observe the surface of a balloon in the moment of its explosion.

Make this easy composting dessert and then enjoy the yummy results!

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

Compare ability of selected materials to block UV-A radiation. Shine black light though glass at detecting beads underneath. Note color intensity.

Science fair project in which you will graft branches from different fruit tree onto a root stalk.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

Learn how different types of soil affect how animal tracks form in this experiment!

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

Use simple materials to build a "worm hotel" with your kindergarten soil scientist...and see what worms really do all day.

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

An home science experiment for older students that teaches about the science behind heat.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Explore the best way to store popcorn kernels. It examines the impact of moisture and temperature on unpopped kernels.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

This science fair project idea investigates if fats add to the flavor of food.