When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

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

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

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

Making your own glass cleaner is easy, effective and inexpensive!

In this project students experiment with making music using only glasses of water.

This simple project makes young children aware of their sense of smell and its capacity for providing them with information about their world.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

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

The fish most kids see is usually filleted, and it's hard to see how it came from a lake or sea. This cool gyotaku activity blends life science with art!

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

Here's a math, science, and social studies activity: help your kindergartener become a "coin archaeologist" by examining how different coins look and feel.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

This science fair project idea teaches to understand and explore the concepts of crystal formation and dissolving substances.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

This Mother's Day, mix in some fifth grade science learning to create this fabulous fudge!

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

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

This science project teaches students to classify different shapes of leaves.