Showing Results for three digit and two step word problems : Page 139

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

In this art project, budding entomologists will create a larger than life, moveable puppet version of a praying mantis.

Learn how different types of soil affect how animal tracks form in this experiment!

Check out this fun leaf chromatography science fair project idea for middle school students and discover the hidden pigments in leaves.

In this wind tunnel experiment, you'll make a wind tunnel to test lift and airflow on a model plane and explore aerodynamics and the Bernoulli Principle.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

Help your middle schooler "map" her complicated day. It's a simple job with big payoffs that will last all through the year!

Do thick liquids flow faster than thin liquids? Examine water and syrup's viscosity and inertia to learn about the Reynolds Number, laminar and turbulent flow.

Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.

Make thinking about college fun by working with your teen to design and plan a Road to College board game.

In this activity, have your second grader practice measuring by finding the height, weight, and length of their most treasured toy!

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

Have fun with bubbles and find out why there are bubbles in your tap water in this cool science fair project idea.

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

Determine how different measurements of the same object might yield different values. Provide as many reasons that you can think of.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

In this physics project, you'll learn how to find the maximum height of a projectile using some math and trigonometry.

Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!

What's the difference between centripetal and centrifugal force? Students find out by seeing both in action as they conduct this experiment.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

Help your first grade scientist learn about metamorphosis by observing the life cycle of some interesting creepy crawlies.

Melt the ice, but save the lawn. The objective of this science fair project is to explore the effects of different substances on melting ice.

This project is about after-images and what possibly affects them.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

Who remembers their ancient Greek history? Here's a teen-friendly refresher course in the epic poem The Odyssey, as well as SAT vocabulary your teen can use.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

This science fair project idea focuses on the production of oxygen by plants during the photosynthesis process.