“欲知后事如何,且听下回分解。”这是古典章回小说中经常用到的一句话,但这一句经典的台词也道出了悬念在课堂教学中的魅力。在科学课教学中,根据科学课的教学特点,适时适当地设置一些悬念,能够让学生始终保持科学探究的热情,消除由被动思维带来的疲劳感,在积极快乐的气氛中感觉科学学习的神奇,进而掌握好知识。如在《水的表面张力》的教学中,利用水的表面张力可以使硬币浮在水面上,根据操作方法很多同学都成功了,并且反复实验都能成功,表现出了很强的自信心。这时我 “To know the funeral, and listen to the next decomposition. ” This is the classic chapter of the novel often used in the sentence, but this one classic lines also drew suspense in the classroom teaching charm. In the teaching of science, according to the teaching characteristics of science class, some suspense should be properly set in time so that students can always maintain the enthusiasm of scientific inquiry, eliminate the fatigue caused by passive thinking and feel the science learning in a positive and happy atmosphere Magical, and then master the knowledge. As in the “surface tension of water” teaching, the use of surface tension of water can make the coins float on the water, according to the method of operation many students have succeeded, and repeated experiments can be successful, showing a strong self-confidence. At this moment I