This science fair project idea focuses on the use a conductivity device to determine the ionic concentrations of hard water.

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

Learn how acid-base catalysis affects enzymes and enzymatic reactions in this science project.

This science project establishes a "breakability index" - basically to assess how much damage is done in different circumstances.

This crafty activity provides a hands-on way for your child to illustrate how the trees look during each season of the year.

Children are imaginative story-builders. Create a shoebox habitat with your child to put those budding creative instincts to good use.

Here's a household scavenger hunt that shows kids the natural sources behind everyday objects...and builds reading skills, too!

Young physicists learn about apparent weightlessnessâthat weird sensation you sometimes feel in elevators, turbulent airplanes, and roller coasters.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Check out this fun science project idea to measure the amount of vitamin C in ripe, half-ripe, unripe and stored oranges.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

Want to get your bookworm interested in science? Check out this cool activity that teaches kids how to write science fiction!

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This science fair project idea addresses tempo, and whether faster or slower music works better as a study aid.

Explore joule heating and resistance vs. temperature with this cool electricity science fair project that gets kids melting ice cubes with resistors.

This science fair project idea investigates whether body language and heart rate can decipher who's lying and who's not.

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.

The purpose of this science fair experiment is to investigate whether the color of your hair affects how much static electricity is carried.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Have your child kick off their summer vacation by making a miniature water slide!

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

Learn how milk freezes into ice cream. Does the fat content affect how quickly the milk freezes? What is salt's role in the freezing process?

Can playing video games trigger an adrenaline rush even though there's no real danger? In this cool experiment you'll learn all about how fight-or-flight works!

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Check out is fun science fair project idea to learn about heat transfer and why certain insulating materials are more practical than others.

Take the art making outside: have your first grader make a clay relief sculpture of the natural world. This is a great activity for summer.