Showing Results for add and subtract

In this fun science fair project idea learn the difference between additive and subtractive color and why they are handled differently.

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

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.

Show your child how to concoct a simple duo of household ingredients that changes color as acids and bases are added!

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

Here's a fun science experiment that's refreshingly tasty too! Turn regular water into a tasty treat perfect for consuming on a hot day.

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

Here is a nifty science experiment using Epsom salts to make "frost" appear on a piece of glass.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

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

Take the plunge into handcrafting with this neat and tidy soap recipe. Here's how to create your own personalized soap.

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

This easy Halloween-themed science experiment for first-graders is perfect for chilly October afternoons or great as a Halloween party activity.

This activity is a great introduction to polymer chemistry. It might seem complicated, but all you'll need is the material found inside of a baby's diaper!

Learn how to make marbleized paper with simple everyday ingredients in this fun activity! Your child will learn about oil and water while doing this project.

Invite your middle schooler to bungee jump ... with eggs! This experiment will demonstrate Newton's laws of physics in an entertaining way.

This surprisingly good glue recipe comes from common kitchen items.

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

How do people move pianos and heavy furniture into tall buildings? Show your kids some pulley potential with this simple household exercise!