Showing Results for mathematics answer key

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

Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

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

This homemade parachute toy is incredibly easy to build. Plus, it gives kids an excuse to investigate and experiment...the backbone of kindergarten science.

Help your kindergarten scientist discover relative size, density, and buoyancy with this fun, pumpkin science project!

Teach your child about using pumps to move water in this simple and educational preschool science activity!

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

This experiment investigates whether there are certain sounds that affect men and women differently

What happens when colored beams of light mix? You might be surprised.

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

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.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Introduce your child to the wonders of colorful chemistry with this simple food coloring project.

How to test for acids and bases? In this activity you and your child can make your own indicator from red cabbage!

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

This kids' activity is fun to perform and impressive to watch. Plus, it's a great example of Newton's First Law of Motion at work.

Have your kid build an ice sculpture in this activity that's so fast, fun, and messy it's the perfect way to demonstrate how much fun experiments can be!

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.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

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.

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

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

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.