In the 1960s, an education outsider named Zig Engelmann begins challenging conventional ideas about what young children can learn. He teaches his 4-year-old twins basic algebra. But he has a hard time getting anyone in education to take him seriously, until a professor gives him a chance to see if his ideas will work in a classroom.


Read: What is Direct Instruction?
Video: The 5 key concepts of DI
Video: Who was Zig Engelmann?


Read: Transcript of this episode


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