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Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

This science fair project idea investigates whether plants can survive being frozen.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

Learn whether writing things down really makes things easier to remember.

This science fair project idea investigates how color affects temperature.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

This science fair project idea determines if the color of light affects the growth of plants.

This project examines whether playing music during class helps students learn or if it distracts students from learning.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

This science fair project idea determines the most effective method of preserving food.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

Find out whether packaged seeds actually do expire in this new science fair project idea.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

Examine the effect of pressure on carbonation in soda.

This project determines what category of person is most likely to be ticklish.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

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

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.