This science fair project idea determines which method of hand cleansing is the most effective.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

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.

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

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

Teach your child how butter is created by shaking up cream the old-fashioned way.

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.

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

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

Help your kid feel like a superhero with this safe and fun science experiment that creates an electrical charge that's like a mini lightning bolt!

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

This science fair project idea investigates if fats add to the flavor of food.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Help your child make a beautiful homemade sandcastle that will last!

Inspire your child to learn about an amazing animal as she creates her very own polar bear habitat.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

Try this fun and simple activity to help nurture your child's observation skills and nourish a growing love of science!

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

Make edible amber fossils with your second grader to explore the fascinating world of science!

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

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.