例题教学是巩固基础知识,启迪创造性思维的契机。本文从改革课本例题教学的角度,探究提高基础知识迁移效益的途径。 (一)、物理规律与物理条件相联系创设物理情境,显示物理规律,除了借助科学实验并进行理论分析外,例题教学也是把基础知识推向迁移高潮的手段。例题:车站传动电梯(如图1所示)与水平面成0=45°,在电梯台阶上有一个质量m=20千克的行李箱。设电梯以a=0.20米/秒~2匀加速上升。画出行李箱的受力图,并求各力的大小。 Example teaching is an opportunity to consolidate basic knowledge and inspire creative thinking. This article explores ways to improve the benefits of basic knowledge transfer from the perspective of reforming textbook example teaching. (1) Physical laws and physical conditions are linked to create physical situations and show physical laws. In addition to scientific experiments and theoretical analysis, example teaching is also a means to push basic knowledge to the climax of migration. Example: The station drive elevator (shown in Figure 1) is 0=45° from the horizontal plane, and there is a suitcase with mass m=20 kg on the elevator steps. The elevator shall be accelerated with a=0.20 m/sec~2. Draw a stress map of the luggage and ask for the size of each force.