This science experiment tests whether warm or cold water works best in making cut flowers last longer.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

This science project teaches students to classify different shapes of leaves.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

This science fair project teaches students the differences between fruits and vegetables.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

In this project, the fingerprints of family members are compared to determine if people from the same family have similar fingerprints.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Teach your creative second grader about proportions, animals, and proper cutting methods with cucumber carving.

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

Your child will create her own falling snowflakes using white paper and glue them over a tree, so it appears as if they are falling from the sky.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

Encourage local wildlife to settle down in your backyard with this adorable bird nest craft.

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

Grow these wheatgrass and alfalfa friends and watch their hair spring up in just a couple days!