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

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.

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.

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.

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.

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

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.

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.

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

April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!

It's food. It's Thanksgiving tradition. And guess what: Cranberry Sauce is also science! Try our simple recipe/experiment.

Help your child learn about animal classification with this fun and delicious activity.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

In this project, different childproof containers are tested to see how childproof they really are.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

In this project, the affect of acid rain is simulated by the acid, vinegar.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.