论文部分内容阅读
［主持人按：本期设计的主题是：引理与碰壁引理，在数学课本上，总是放在前面的；在教学时，在什么地方什么时机出现，才最为合适呢？我们的回答是，让学生先碰壁，这时才想到引理，“兴许发现个什么‘引理’，能解决这里的困难．”──培养学生形成这么一种觅引理意识，是很
[Moderator: According to the theme of this issue: Lemma and Leaning in Leaning, in mathematics textbooks, always on the front; when teaching, where does the best time come? Our answer is to allow students to hit a wall first. Then we think of lemma. “What ‘legitimacy” might be found would solve the difficulties here.” — It is very important for students to develop such a kind of ambiguous lemmas.