For class
Lesson plans
One period each. None of these pairs already link. The shortest route is two clicks, and the plan shows every chain students can find.
2 clicks · Grade 8 mathematicsThe distance a phone has to computePythagorean theorem → Trigonometry → Global Positioning System · Pythagorean theorem → Euclidean geometry → Global Positioning SystemA straight-line distance is the hypotenuse of a right triangle. GPS needs that kind of distance, measured from satellites instead of paced off on a sidewalk.2 clicks · Grade 7 scienceThe light a leaf and a panel both catchPhotosynthesis → Infrared → Solar cellA leaf and a solar cell have the same first job: absorb energy that arrives as light. They keep that energy in different forms. The bridge article is Infrared, which is a kind of light, so the route forces the class to talk about light itself.2 clicks · Grade 10 world historyThe smoke between the factory and the climateIndustrial Revolution → Air pollution → Climate changeThe Industrial Revolution and climate change are one causal chain. New machines needed fuel, the fuel was coal, burning coal changed the air, and that change is part of how the climate warmed. The bridge page is Air pollution.