Showing Results for add and subtract

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

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

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

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

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

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?

This science fair project will help students learn about non-vascular plants, such as mosses.

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

Teach kids about a fun way they can remember this more efficiently- the power of mnemonics. Kids will be amazed.

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.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

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

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

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.

Learn all about balance and motion as your child designs a corn maze!

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

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

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

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

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

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

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