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.

Many ancient cultures used the rising or setting sun to create calendars. Observe the setting sun once a week to come up with your own solar calendar!

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

Help your child plant a "tea garden": a garden made of herbs for making teas.

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

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

This science fair project examines how seeds hitchhike on animals and clothing.

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

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Some fossils have been been preserved for billions of years! Help your kid understand how fossils are created and preserved with this crafty project.

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.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

This science fair project idea explores the different properties & interactions of sugar molecules.

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.

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.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

Using simple materials found around your home, you can reinforce the static electricity concept by helping your child build a simple device with zapping power!