读了《物理教学》1987年4期实验拾零栏中“打点计时器的点滴改进”后,使我鼓起了勇气,谈点自己的看法。打点计时器是高中物理实验中常用的仪器。由于它自身构造上的缺陷,使用很不方便。我于1984年就把我校的八台打点计时器进行了改造,去掉了复写纸和打点的金属针,换上了彩色水笔笔尖,用来打点。改造后使用方便,打点清晰,效果很好。我就曾投稿某物理教学杂志,但没有被采用。1986年我给高三进行毕业复习时,得到了一份1985年全国高等学校统一考试 After reading the “Improvements of the Rip Timer” in the physics teaching column in the 4th experiment of 1987, I gained the courage to talk about my own opinions. The dot timer is a commonly used instrument in high school physics experiments. Due to its own structural defects, it is inconvenient to use. In 1984, I modified the school’s eight RBI timers, removed the carbon paper and the metal needles, and replaced them with colored pen tips. After the transformation, it is easy to use, clear and effective. I have submitted a physics teaching magazine but I have not adopted it. When I was graduating from my junior year in 1986, I got a 1985 Unified Examination for National Colleges.