How powerful is the reaction between baking soda and vinegar? Find out here!

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

In this science fair project, students create their own miniature salt flats at home.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

Help your child plant a "tea garden": a garden made of herbs for making teas.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This science fair project examines how seeds hitchhike on animals and clothing.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

Lead your first grader on a nature walk ... with a scavenger hunt-style twist! They'll try to capture photos that correspond to paint chip colors.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

Science fair project that examines condensation and the conditions needed in order for dew to form.

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.

Celebrate April Fools' Day with a science prank that is sure to amuse...and educate too!

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

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

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.