This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

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

What better way to nurture your child's imagination than by making a fairy house out of materials found in nature!

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Your 1st grade scientist will improve her observation skills as she's encouraged to eat healthy by comparing the dry and fresh fruit in this experiment.

For your budding first grade scientist, all you need is some simple, natural materials to create an amazing ant farm. Here's how to get started.

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

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

In this design challenge, your child will create a parachute for a small toy using typical household items.

Using scherenschnitte, your science-savvy second grader will be able to create and display each part of a vegetable!

Help your first grader design and create his very own bird feeder out of an empty milk carton.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Learn all about balance and motion as your child designs a corn maze!

Grow borax crystals and get your child excited about Earth science with this crafty science experiment.

You don't need to head to the Arctic to experiment with life in an igloo. Learners can build their own ice igloo at home from water and empty milk containers.

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

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

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

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

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

Give your budding young observers a chance to discover simple machines at use in their own home.

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

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

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.