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

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

The goal of this science fair project is to assess the acidity levels of common food and household products using pH test strips.

.Have you ever had problems with your wifi signal strength? In this experiment you will learn about how wireless signals pass through the air and solid objects.

Bring back the groovy memories by making shrinky dinks using household materials, while learning about the science of plastics. Here's how to get started:

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

Take the plunge into handcrafting with this neat and tidy soap recipe. Here's how to create your own personalized soap.

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

Future whistleblowers can learn about product safety standards with this exercise in writing and researching.