Determine if âdouble dippingâ chips really spreads more germs than dipping only once per chip.

Create a double-slit interference out of cardboard. Produce an interference pattern that demonstrates the wave and particle characteristics of light.

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!

Test ability to distinguish between natural and artificial aromatherapy oils. Select fragrance, natural and synthetic sample. Volunteers state preference.

In this science fair project, students investigate the applicability of Benford's Law to many sets of everyday data.

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.

Thermometers are how we measure temperature, and we've all heard the terms "centigrade" and "Fahrenheit" tossed around, but what do they really mean?

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

This science fair project idea focuses on saturated and unsaturated lipids (fats and oils).

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!

Make a lei and bring a touch of the tropical lifestyle into your home!

Do this activity to help your kids see how seeds contain "baby" versions of big plant stems, roots, and leaves.

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

This project compares different liquids and the freezing, melting and boiling points of liquids.

Observe which kind of fresh long-stemmed flower will last the longest after being picked.

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!

Try this arts and crafts activity with your preschooler: make bread from yeast dough to teach her about the science behind bread baking.

In this "paper and pen" science fair experiment, students will research the difference between standard time and astronomical mean time.

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.

Science fair project that examines learn how the angle of incidence affects the efficiency of solar panels. How does a solar cell work?

Explore the effect of wind speed on the burning rate of a candle.

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.