表达能力是指用口头语言来表达自己的思想感情,以达到与人交流的一种能力。科学教学中也要注重对学生进行表达能力的培养。我们在科学教学过程中,课上看起来非常热闹,有动手做实验的,有举手发言的,但不难发现,那些学生都是我们所谓的尖子生。每当有问题时,那些尖子生能够较流利地表达出自己的观点。而表达能力较差的学生,既说不全而且速度也慢。因此,教师常常为了教学的顺利进行和表面上的精彩而礼貌性地要求他们坐下来再想一想,从而抹杀了他们发言的积极性中,不利于口表达能力的 Expressive ability refers to the use of oral language to express their thoughts and feelings in order to achieve the ability to communicate with others. Scientific teaching should also pay attention to students’ ability to express. In the process of teaching science, we can feel very lively in class. There are hands-on experiments with speeches in hand, but it is not hard to find out that those students are what we call top students. When there are problems, those top students can more fluently express their point of view. Students who are less able to express are both incomplete and slow. Therefore, teachers often ask for them to sit down and think about the smooth progress of teaching and on the surface of wonderful and politeness, thus denying them the enthusiasm of speaking, which is not conducive to oral expression