How Much Do You Really Weigh?

A growing demand for sustainable food systems comes from schools and even some cities. So what are some solutions? Scholars consider four different ways to approach sustainable food solutions and list the pros and cons of each. The fifth...

Scholars approach a problem trying to plan a meal for a class party. They learn about the restrictions and must decide what information they need to plan the meal. The first lesson in a 13-part unit on Our Hungry Planet encourages...

Learners will like making a liquid layer cake to investigate the relative densities of various liquids: water, oil, and corn syrup. They will also introduce a few solid materials to find out how their densities compare. Standing alone,...

Not many youngsters realize that solids aren't the only materials that can possibly be dissolved in water. During this investigation, they find out that some liquids can dissolve in water as well. This is part of a unit on solubility,...

Help your class come up with a procedure for comparing the dissolving rates of colored candy coating in different temperatures of water. If you are placing importance on controlled variables with your class, make sure that they use equal...

Too much material will weigh you down. The sixth segment in a series of 22 highlights how weight affects a plane. Pupils learn that engineers take the properties of materials, including weight, when designing something. 

Can you feel the weight of the air on your shoulders? Your classes may not believe that air has weight. A straightforward experiment asks individuals to weigh a bottle before and after adding air. Their results may surprise them!

Bend it, but don't break it. Groups investigate the strength of different materials. Using a procedure in the seventh segment of a 22-part series on aviation, pupils determine how far a rod will bend. They determine the strength-to-mass...

Get a better understanding of babies in the sea. The class learns about the two kinds of plankton. They then determine the baby pictures of eight marine animals given a picture of the adult and some hints about the larvae. When scholars...

Adorable little stick figures push and pull a cart of blocks to explain the push and pull of forces. Future physicists then define force and identify it in different situations on the activity that follows. Concepts covered include...