A path into understanding.
A few thoughtful steps. A little more understanding with each one.
GUIDED LEARNING PATH
Learn by changing one thing
Practice predicting, experimenting, and explaining in two very different systems.
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From charge to motion
Connect current, magnetic torque and the mechanical gear ratio.
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Air, blood and sound
Trace different kinds of movement through the body.
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The price of an easier lift
Connect three kinds of mechanical advantage, then discover why an arm often works at a force disadvantage.
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From sunlight to a meal
Follow the roles of energy and carbon, then the routes of selected nutrients.
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How to keep the cold
Distinguish moving heat from resisting heat transfer.
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