一位老师在讲了反比例之后,郑重其事地告诉学生:正归一问题实质是正比例问题,反归一问题实质上是反比例问题。只说对了一半。应该说,这是教学中的失误。 A teacher, after speaking in anti-proportionality, solemnly told students that the problem of positive return is a matter of proportionality and that the problem of anti-registration is essentially an inverse proportion. Just half right. It should be said that this is a mistake in teaching.