Help your young scientist celebrate the wonders of the night sky in the comfort of your own home.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

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.

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

Determine whether butterflies like to drink sugar water, salt water, or plain water.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

Help your child learn about animal classification with this fun and delicious activity.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.

Here's a pressed leaf card project that puts science and writing together for your second grader.

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Challenge your learner to design and build a city of their own in this creative engineering activity.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

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

This science fair project idea produces varying pitches of sound.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

This activity is a great way to stretch the boundaries of your child's imagination and build up important critical thinking skills.

Find out whether a longer airplane will fly farther or a wider paper airplane.

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.