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When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

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

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

Is it a square or a circle? See if you can trick your friends with this zany science project!

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

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.

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

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.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Teach your first grade scientist the difference between liquids and solids using maple syrup.

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

Word color association is just a fancy way to talk about the way we connect colors with words.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Discover flight initiation distance as you play around in the park with this fun bird watching project!

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.