玛丽亚·德鲁伊科娃是“自然数学”的创始人之一，她曾向5岁的儿童教授基础微积分概念。
Maria Droujkova is a founder of Natural Math, and has taught basic calculus concepts to 5-year-olds.
数学归纳法推理是典型的三段论，而不是完全归纳法，其基础是自然数列的性质，而不是逻辑公理。
Mathematic induction is a typical syllogism, it is not complete induction, its base is the property of natural sequence, but not logic axioms.
数学归纳法推理是典型的三段论，而不是完全归纳法，其基础是自然数列的性质，而不是逻辑公理。
Mathematic induction is a typical syllogism, it is not complete induction, its base is the property of natural sequence, but not logic axioms.
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