Showing Results for three digit and two step word problems : Page 31

Which type of sunglass lenses gives you the best protection from the sun's harmful UV rays? Find out in this cool science project!

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

Calculate the mass of the Earth using the sidereal and calendar period of the Moon and Newton's Law of Universal Gravitation in this physics science project!

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

How does light affect plant growth? Do different colors of light work better than others? Find out in this classic science fair project idea.

Does fear cause the same physiologic responses in men and women? This experiment measures people's blood pressure and heart rate while watching a scary movie.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

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

This experiment explores the question of whether age and/or gender play a role in people's ability to remember dreams.

This science fair project idea examines the differences between bottle water, filtered water, and tap water.

This science fair project explores whether musicians are better than non-musicians at distinguishing and understanding speech in noisy environments

This experiment demonstrates the conservation and transfer of energy using a marble rolling over sandpaper.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

Explore the belief in astrology as a predictive system.

Science fair project that determines whether mass and weight are the same or different.

This science fair project idea focuses on the use a conductivity device to determine the ionic concentrations of hard water.

Young physicists learn about apparent weightlessnessâthat weird sensation you sometimes feel in elevators, turbulent airplanes, and roller coasters.

Dig into the physics of pool to explore some cool applied math and learn about what happens in an elastic collision of equal masses.

Do people only "hear" what they want to hear? Explore pareidolia and psychoacoustics with this easy science fair project that pits melody against white noise.

Test the idea that people who wear glasses tend to be more educated. True or false?

What does yeast eat? Sugar, of course. But yeast also has some powerful enemies in the form of antifungal agents! Kids test them out in this fun yeast lab.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

Kids will enjoy this cool demonstration of Newton's Third Law and the conservation of linear momentum.

Determine whether carpet placed on a lawn will kill grass and weeds. Choose an area of lawn that you would like to remove, record grass that is dead or dying.

Determine if picking up fallen food in 5 seconds or less prevents the transfer of bacteria from the ground.

Which battery lasts the longest? In this science fair project, kids will test popular brand name batteries like Duracell and Energizer against generic brands.