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

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

Science fair project that determines which foods and drinks contain the highest amount of glucose.

This experiment investigates if small changes in your diet can alter your basal body temperature.

Develop your child's green thumb with this easy planting activity. These plants are guaranteed to grow fast and are "brown-thumb" proofed!

Many substances are compounds of different elements. This experiment combines iodine and zinc to make zinc iodide.

Science fair project which compares the rates of photosynthesis for various light sources. Which type of light will be best for photosynthesis and why?

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

This science project examines the effectiveness of various types of laundry detergents on stains trapped on a white handkerchief.

In this science fair project, young children will become aware of and have the opportunity to experience the four basic tastes: sweet, sour, salty, and bitter.

This potato cannon activity teaches your middle schooler about the principle of Boyle's Law. Make a potato cannon and have a blast learning about science.

Put those fall leaves to use with this fun art activity. Kids paint and print leaves, to make a beautiful tablecloth, perfect for your next fall celebration.

Teach your child the meaning of recycle and reuse by repurposing plastic spoons as plant markers for your vegetable garden.

This cool air pressure demonstration has kids break a ruler using only a newspaper and atmospheric pressure.

This simple activity is not only fun, it's also a useful way to organize children's closets — and offer kids some autonomy to boot.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

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

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

Save money by making compost! Use this science fair project idea to determine which composting methods best encourage decomposition of organic matter.

This experiment will test whether people are better auditory or visual learners and if there is a link between gender and either of these learning types.

Explore the belief in astrology as a predictive system.

Do this activity to help your kids see how seeds contain "baby" versions of big plant stems, roots, and leaves.

How fast is the wind blowing? This science experiment provides step-by-step instructions to help you answer this question.

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!