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Science fair project in which you will graft branches from different fruit tree onto a root stalk.

Kids make strong bubbles to investigate the effect different additives have on bubble life in this cool science fair project idea.

Check out this fun leaf chromatography science fair project idea for middle school students and discover the hidden pigments in leaves.

What kind of fabric holds dye best? How can you improve a dyed fabric's colorfastness? In this colorful project, test colorfastness using mordants and bleach.

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

Investigate the different ways in which objects and organisms can be classified, create your own. then have volunteers classify using their own systems.

Is garlic antibacterial? Antimicrobial? Kids find out by using common kitchen equipment and ingredients in this cool and easy microbiology science fair project.

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

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

The actual factors affecting friction may surprise you! Learn about the coefficient of friction and put some trigonometry into practice in this science project.

Kids learn how to make a simple electric motor in this great engineering science fair project that teaches them how current generates its own magnetic field.

Build a magnetic linear accelerator using a ruler, neodymium magnets, and small metal balls in this fun science fair project exploring magnetic propulsion.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

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

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

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

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

Check out this fun science fair project idea to measure bacterial colonies from door handles and explore the effectiveness of different cleaning agents.

In this cool psychology experiment, study how companies air commercials to strategically advertise to viewers who will buy their products.

Construct batteries that make electricity from fruits with this fun science fair project.

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.

Check out this cool science fair project on identifying rocks and minerals for kids.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

This project examines various algorithms to determine the ideal algorithm for a strategy game.

Can cells be frozen? This science fair project provides information to answer this question.

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.