In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

This science fair project idea demonstrates that plants give off water.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

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 examines whether plants are still able to grow normally if they are turned upside-down.

This science fair project idea examines the reason boats are shaped and engineered.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

This biodiversity project examines the biodiversity in your own backyard.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

Do different types of oil mix or stack? Find out in this science fair project idea!

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

This science fair project idea explores the egg's thin membrane.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

In this activity your child will create their very own marble maze!

Discover whether cold or hot water from the faucet will boil faster on the stove.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

Test whether plants can grow without sunlight and water.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.