In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

Here's a science activity that lets a first grader use an empty dish detergent bottle to create his own fountain as he explores air pressure.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

This will encourage your child to utilize their observation skills, develop aesthetic awareness, build artistic drawing abilities and learn about the seasons.

This science fair project investigates why the number of visible stars changes from place to place.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

Introduce your child to science with something they see everyday--their shadow!

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

This winter garden project is just about bomb-proof, and believe it or not, it might even make a great gift. So get craft happy with your first grader!

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

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.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

Children learn the six parts of a plant...but do they really understand? Try this plant-themed meal plan to bring school science into the home.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

Is your child a young ornithologist in the making?

In this experiment we will be determining whether birds prefer certain colors of seed.

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

Cleaning can be a chore, but not with this sudsy experiment!

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.