指导学生自行探究、研讨、得出结论是自然教学中公认的最佳教学模式,但为什么实际上很难达到这个效果呢?主要原因就是一怕课堂秩序不好控制;二怕学生什么也没研究出,没有达到预定的目标;三怕学生动脑、动手能力有限,不能按照课本、教师的步骤安排进行。因此整节课学生的动脑思考、动手实验都由教师安排操纵,只是象征性地让学生自行探究一下,将实验方法、步骤、思维都完全 Guide students to explore, discuss, come to the conclusion that natural teaching is the best teaching mode, but why it is actually very difficult to achieve this effect? ​​The main reason is that a fear of poor control of the classroom order; second fear of the students did not study anything Out, did not achieve the intended goal; fear of students brains, hands-on capacity is limited, can not be arranged in accordance with textbooks, teachers, steps. Therefore, the whole class of students thinking, hands-on experiments arranged by the teacher to manipulate, but symbolically allow students to explore, the experimental methods, steps, thinking completely