在自然教学中恰当地设置悬念，有利于创设轻松愉悦的氛围，使学生产生探求知识的兴趣。l通过实验，设置悬念自然是一门以实验为基础的学科，通过实验来设置悬念，往往收到意想不到的效果。如《磁铁游戏》一课的教学，开课时教师用“小猴爬树”的实验来设置悬念，学生百思而不得 Proper placement of suspense in natural teaching is conducive to the creation of a relaxed and pleasant atmosphere, so that students have the interest of seeking knowledge. l through experiments, set suspense nature is an experiment-based discipline, through experiments to set up suspense, often receive unexpected results. Such as “magnet game” a class of teaching, the beginning of the class teacher to use “monkey climb tree” experiment to set suspense, students can not be baffling