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Showing Results for "add and subtract"

Add some punch to your own doodles with a quick lesson about how to draw light and shadows.

Drawing Light and Shadow

Every four years something funny happens with our calendars -- we add a day! Why do we do this? Discover the science behind leap year.

Why is There a Leap Year?

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

Adding Colors: An Optical Experiment

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

Watch Acids and Bases Produce Colors!

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

A Glass Symphony

Did you see the announcement in 2016 about new elements added to the periodic table? Put these new periodic elements flashcards in your study toolkit.

New Periodic Elements Flashcards

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

Make Frost on the Window!

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

How to Make a Bouncy Ball

Practice diagramming atoms and using the periodic table to pull information about atoms with this quiz page.

Atom Diagram

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

Layering Liquids: Explore Density Science

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.

Make Marbleized Paper!

Play a fun game that combines the periodic table with a classic concentration game.

Periodic Table Game

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

The Red Cabbage Acid Test

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

Under Pressure

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

Do Some Cranberry Sauce Science!

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

Make a Fistful of Slime!

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.

Make Your Own Soap

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

Test for Acids or Bases Using...Flowers!

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

Homemade Frozen Yogurt

Learn with makes water molecules work with this fun and easy science activity!

Molecule Madness: A Water Experiment

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

Make Ice Cream in a Baggie!

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

Foam It! Cause a Chemical Reaction

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

Halloween Decorations: Make Ghouly Hands!

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

Testing the Solubility of Common Liquid Solvents

This experiment that explores water and air pressure will amaze your fifth grader as it appears that a single card is holding water in an upside-down glass.

Try Water Science Trickery!

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

How Strong are a Bird's Bones?

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

Break the Tension: A Water Experiment

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

Bake a Chemistry Cake

In this teacher-approved lesson, students will make and play with oobleck (corn starch and water), then write about their experiments. Young scientists will have a blast seeing their oobleck mixtures seemingly come to life.

Ooey Gooey Oobleck

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