在《磁铁的两极》教学中,当我指导学生认识磁铁的南北极性质,让学生自主探究磁铁两极的互相作用,并归纳出同极相斥、异极相吸的性质后,我提出一个课外探究的问题:如果磁铁被敲断后,变为两块小磁铁,这两块小磁铁还能吸起来吗?学生兴奋极了,显然,他们被这个问题深深吸引住了。第 In “Two Poles” teaching, when I guide students to understand the nature of the south pole and south pole of the magnet, and let the students explore the interaction between the poles of the magnet independently and sum up the same polarity and repulsion, I propose an extracurricular The question to be explored: If the magnet is knocked out and turned into two small magnets, can the two small magnets be sucked up? The students are very excited, obviously, they are deeply attracted by this question. No.