“我们每一节课都要起到这么一个效果,都要‘一石激起千层浪’。这可说是具有战略性的。关键在哪儿呢?就在你这节课给他们的内容、方法能不能激起他们的兴趣,又给了他一定的武装,使他有条件去继续搞这个玩艺。”这是刘默耕先生在阐述自然教学改革的核心思想时的一段话,实际上也是自然课应如何形成一个开放系统的问题。 综观自然教学,就一节课而言,我们已经在努力做到使学生按照收集事实、整理事实、研究事实的路子去认识自然界里的事物和现象,去“搞科学”。这样做的重要意义就在于使学生能够通过多次的“科学研究”活动去把握 “Every lesson we have to play such an effect, we must 'inspire a thousand waves.' This can be described as strategic. Where is the key? Just in your class to their content, The method can arouse their interest and give him a certain degree of armor that will allow him to continue to engage in this artifice. ”This is a remark made by Mr. Liu Munggeng when he elaborates on the core ideas of the nature teaching reform. In fact, it is natural How to form an open system issue. Looking at natural teaching, as far as a lesson is concerned, we have tried our best to make our students understand the things and phenomena in nature in accordance with the facts collected, the facts compiled and the facts studied, so as to “engage in science.” The significance of doing so is to enable students to grasp through multiple “scientific research” activities