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

Find out the differences (if any) in the frequencies of voices produced from a computer, from a phone, and directly coming out of the voice box of a human.

This quick and simple preschool mirror activity will introduce your child to the science of reflection and light with a flashlight experiment and picture game.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

This activity will help your child review science concepts, learn new ones, and become familiar with examples of various concepts in science. Plus, it's fun!

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

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

Blanket forts are a kid classic! Let your child create a âfortress of solitudeâ on his own for reading, telling scary stories or for cozy cocooning.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

Here's an investigative activity in which your child will discover real-world names and uses for sugar and find out how it is hidden in many different foods.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

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

Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.