Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

In this science fair experiment, students learn about the scientific principles behind Doppler ultrasound.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

Making your own glass cleaner is easy, effective and inexpensive!

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

For this activity your child will use the ready made glycerin base to create elegant rose petal hand soaps.

This surprisingly good glue recipe comes from common kitchen items.

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

.Have you ever had problems with your wifi signal strength? In this experiment you will learn about how wireless signals pass through the air and solid objects.

Have you or your child ever heard that nursery rhyme and wondered just what curds and whey are anyway? Do this simple experiment together to find out!

Chemistry is a blast with this backyard bomb made from a sandwich bag. All you need are ingredients from the pantry to create a satisfying, and safe, explosion.

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 science fair project idea demonstrates sonar mapping of the ocean floor.

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

This awesome diffraction grating experiment puts high school students' applied math skills to the test by having them calculate the wavelength of laser light.

I scream, you scream, we all scream for homemade spearmint ice cream!

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

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

Conduct a simple science experiment to see if flowers from your garden pass the acid-base indicator test with this exciting chemistry activity.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

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