Showing Results for -and--old

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 project allows students to study the psychology of happiness.

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

Is your child a nature nut with an eye for creative, green-friendly projects? Introduce them to this amazing DIY bird feeder!

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

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Believe it or not, the common spud has enough electrochemical energy to power a small digital clock.

How do organic materials become soil? This science experiment measures what materials biodegrade.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

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.

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

In this activity, your kid will watch coal turn into crystals right before her very eyes, and learn some science along the way!

This science fair project idea explores whether white light can be separated into different colors.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!

This science fair project idea explores which fruit molds the fastest.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This science research project challenges students to think of more effective lobster farming methods.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

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

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

This science fair project idea studies which brand of wintergreen candy produces the most sparks in the dark.