Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Show your teen how to analyze the nutritional value of her favorite meals. She may be surprised to find out how healthy--or not--her favorite foods are!

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

This experiment works due to a simple principle: plants need light. Build a shoebox maze and watch the plant work though the obstacle course, searching for sun.

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

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

This science fair project idea shows kids how to grow mold and whether mold grows better in dry or moist conditions.

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

Choose a timeline to live without technology. Keep a journal of all the issues encountered. What are the benefits and cons of modern technology?

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Satisfy your sweet tooth with this easy summer activity! Make homemade ice cream and let your child practice his science skills.

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

Using a glass fishbowl, you and your kids can create a low-humidity, open-topped terrarium perfect for easy care, drought-tolerant succulents.

This project explores what happens to a rubber band when it is heated and cooled.

Use sticks and stones to create create an outdoor version of tic-tac-toe!

This project determines what percentage of test subjects react adversely to the sound of fingernails on a chalkboard and explores their physiological responses.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Explore aromas with your child and help boost her brain power with some fun and interactive science activities.

The objective of this science project is to determine whether the brain first processes colors, shapes, or words when given conflicting messages.

Start your toy engines -- this is going to be a fast and friction-filled race!

The objective of this science fair project idea is to find out whether refrigerating cosmetics will extend their shelf-life and longevity.

Find out which kind of bubble wrap fares best when put in impact.

The objective of this science fair project is to determine the rate at which participants can respond to different patterns.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.