Showing Results for double

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

Grow these wheatgrass and alfalfa friends and watch their hair spring up in just a couple days!

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

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

Make all-natural dye from vegetables to create gorgeous homemade play-silks!

This easy at-home experiment is a great way to "see" science.

Has your child ever played weatherman? Try this science activity that lets kids try their hands at observing and predicting the weather.

For a fun family activity to introduce your child to genetics, have your child go on a search for dominant and recessive family genes!

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

I scream, you scream, we all scream for homemade spearmint ice cream!

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

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!

Is it a square or a circle? See if you can trick your friends with this zany science project!

The next time you and your fifth grader go on a hike, take along this key to figure out which common North American animal left a track along the river bank.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Make sourdough bread...and learn some colonial history and modern science in the process!

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.