论文部分内容阅读
在中学物理教学中,利用投影仪进行课堂或阶段复习演示教学,如量筒、弹簧秤、温度计的读数训练、扛杆力臂的图解、物体的受力图解分析等等,都可通过利用组合幻灯片,通过抽拉、复盖等的放映手法,达到直观教学的效果。学生普遍反应看得清,易理解掌握,由于幻灯片能反复使用,因而还具有省钱,省时等的优点。所以是值得引起大家重视的一种新教学手段。 STQ书写投影仪是一般中学实验室都具备的电教仪器。由于它的光源较强,放映画面大,因而成为投影仪中较受欢迎的机种之一。但由于该机是采用风扇强迫空气对流降温的,结构上镜头又是安置在一根竖起的挺
In the middle school physics teaching, the use of projectors for classroom or stage review demonstration teaching, such as measuring cylinders, spring scales, thermometer readings training, diagrams of the levers of the boring bar, graphic analysis of the force of the object, etc., can be used by using the combined slide Through visual projections such as drawing and covering, the effect of intuitive teaching can be achieved. The general reaction of students is clear and easy to understand and master. Because the slides can be used repeatedly, they also have the advantages of saving money and saving time. Therefore, it is a new teaching method worthy of everyone’s attention. STQ writing projectors are audio-visual instruments that are generally available in the middle school laboratories. Due to its strong light source and large display screen, it has become one of the more popular models in projectors. However, because the machine uses a fan to force air convection cooling, the structure of the lens is placed in a standing upright