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

Science fair project that compares leaf pigments of various tree species. Which tree species do you think will have the most pigments and why?

Put an oatmeal box, a flashlight, and some construction paper together and you have the makings of an incredibly cool bedroom planetarium!

Determine how wind speed affects the stability of a kite and the ease of getting it into the air.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

The goal of this science fair project is to identify the galactic center of the milky way using globular clusters, as found through Google Earth.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

In this fun science fair project idea learn about the multiple sources of radio waves and fin out how difficult it is to block them.

Science fair project that demonstrates how a rainbow forms, by using water to split white light into its many colors.

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

Is there any correlation between hot tubs and high blood pressure? Kids discover the answer (and its biological basis) in this cool science fair project.

Can playing video games trigger an adrenaline rush even though there's no real danger? In this cool experiment you'll learn all about how fight-or-flight works!

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

Try the classic balloon-on-the-wall trick with your kid and watch static electricity in action.

Do human lie detectors exist? Charge up your powers of observation to see if you can tell a lie from the truth.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

Show your middle schooler how a quick whirl of spinach in the blender will reveal the cobwebby "stuff"--or DNA--of life!

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

Take advantage of the fact that ink and water don't mix and introduce your kid to suminagashi, a Japanese form of art.

Discover whether the color of text correlates with ease and speed of reading.

In this game, players will learn interesting facts about animal adaption and practice them using a fun matching card game!

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

This experiment that explores water and air pressure will amaze your fifth grader as it appears that a single card is holding water in an upside-down glass.

Show your teen how to make her own beeswax lip balm. It's one of the simplest do-it-yourself activities, and it's fun to make!