Showing Results for three digit and two step word problems : Page 23

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Science fair project that determines whether disinfectant sprays or disinfectant soaps are more effective at removing bacteria from hands.

Investigate which substances are most effective at removing salt from water.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

A mixture of botany, exploration, Abstract Art and Pop Art color theoryâthis activity never gets dull! Start by exploring outdoors and finish with indoor art.

This science fair project idea addresses tempo, and whether faster or slower music works better as a study aid.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Science fair project that compares the properties of different fabrics to determine whether natural or synthetic fabrics are better at wicking away moisture.

Dive into the world of cooking oil and smoke points to discover just how fast some oils start smoking.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

In this science fair project, students use hot and cold water to simulate what happens when a warm front meets a cold one.

Discover whether the color of text correlates with ease and speed of reading.

Explore if planting seeds in a certain direction will affect how fast it germinates.

Science fair project that examines how light wavelengths affect photosynthesis in the aquatic plant: Elodea.

Investigate the advantages of the use of ceramics in engines such as the tiles used in Space Shuttle. Use iron filings and magnets.

Science fair project that teaches you key definitions of molecular science, and how different isotopes of an element affect the relative atomic mass.

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

Boiling water in a paper cup is possible because of convection and the thermal properties of water and paper. Learn how with this fun science fair project idea.

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

Plants and light seem to be good buddies, but how far does the friendship really go?

In this fun science experiment, make a balloon car and test it on different surfaces to learn about sliding friction and rolling friction.

Learn how matter transmits sound with a simple, hands-on experiment using sand, water and air.

Find out if most people can distinguish the difference between tones on different instruments.

What's cooler than an explosion? Not much! This simple science experiment lets kids build their own pop rocket. So put on your safety goggles and let her rip.

This science fair project teaches students about wilting and browning of salad greens.

Explore joule heating and resistance vs. temperature with this cool electricity science fair project that gets kids melting ice cubes with resistors.

This science fair project idea discovers the average time it takes for a person to remember something completely.

Science fair project which determines which colors of light allow plants to produce the most chlorophyll. How are color and light related to each other?

Your child can use Styrofoam, green paint and toothpicks to create her own cactus plant sculpture.