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Do you happen to remember the title? I am very curious to see how they implemented this

• 082349872349872 6y ago
  No more memories, sorry. That was way back when phone conversations were over wires and television was wireless. The chain of concepts to be taught was linear, and for each concept there would be a few paragraphs of instruction, followed by a set question with multiple choice ("if you think the answer is X, turn to page Y") set. A correct choice would lead to the next concept, while the available incorrect choices would each lead to material clearing up that presumably common misunderstanding[1] (leaving the reader with uncommon gaps to reread the intro?). I can no longer remember if the clarifications included check-up questions or just looped back to the original. [1] In book form, this approach wouldn't work well if the concepts had long-tails of possible misconceptions. Online, that could be less of an issue.