Teaching Machine: Branching Frame Map (2D)

Long before laptops and adaptive apps, the earliest "educational technology" in the electromechanical sense was Norman Crowder's branching teaching machine: a device that showed a learner one frame of instruction, asked a question, and — depending on the answer — either advanced to the next frame or detoured through a simpler remedial frame before looping back. This 2D dashboard renders that mechanism as a draggable, zoomable frame-map graph — a 12-frame main line arcing across the canvas with a remedial branch hanging below each frame — while two live side panels plot the exact logistic response curve and power-law practice curve that decide whether each attempt succeeds. Toggle branching on or off to compare Crowder's intrinsic programming against Skinner's earlier linear teaching machine, tune aptitude and difficulty, and either step through answers by hand or let the machine auto-run.