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这是一节“利用单摆测重力加速度”的实验课。我像往常一样,上课时按照教案的预设,先就实验目的、实验器材、实验原理、实验步骤、数据采集及处理办法清清楚楚地讲一遍,并告诉学生:“小钢球的直径已经测好,是2 cm,直接代入计算就可以了。”然后组织学生开展实验,没过多久,就发现两个男同学在报告纸背面下五子棋,看到老师发现就赶紧收起来了。当同学们顺利地完成实
Here is an experimental lesson “Measuring pendulum acceleration with pendulum”. As usual, in class, according to the precepts of the teaching plan, I first make it clear on the purpose of the experiment, experimental equipment, experimental principles, experimental steps, data collection and processing and told the students: “The diameter of the small steel ball It has been measured, is 2 cm, directly into the calculation on it. ”And then organize the students to experiment, it did not take long before they found two male students in the back of the paper under the backgammon, saw the teacher found it quickly put away. When the students successfully completed