This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

This fun science fair project idea helps students learn how acid rains are formed and explore how acid rain damages the environment.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

This science fair project idea compares biodiversity between drops of water.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

Do you think heat can affect a plant's growth rate?

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

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

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

Is your child a young ornithologist in the making?

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

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

Check out this cool science fair project on identifying rocks and minerals for kids.

Test whether plants can grow without sunlight and water.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

Got a birdwatcher on your hands? Bring the birds to your backyard by making a zany bird feeder using an orange and some string.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.