Showing Results for add and subtract

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.

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.

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.

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!

A simple science experiment exploring the physics of water pressure that's been amazing people since Medieval times.

It's food. It's Thanksgiving tradition. And guess what: Cranberry Sauce is also science! Try our simple recipe/experiment.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

Help your kindergarten scientist understand the concept of surface tension with this simple science experiment.

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

Give your child an introduction to food preservation by making and canning your own yummy, homemade pasta sauce!

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

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!

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

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

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.