In this project children practice the scientific method while playing with puffy paint.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

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

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

Make a backbone model to explore human anatomy and life science.

This science fair project idea explores whether white light can be separated into different colors.

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

How do organic materials become soil? This science experiment measures what materials biodegrade.

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

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

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

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

This classic children's game demonstrates how sound travels through air vs. through a solid.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

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

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

Cleaning can be a chore, but not with this sudsy experiment!

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

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

In this experiment we will be determining whether birds prefer certain colors of seed.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

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

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