逻辑推理课巧用启发式□海城市教师进修学校郑桂兰在逻辑推理课中，有些客观事实不便在课堂中让学生直接观察，例如：日食、月食，月球表面的自然情况，火山地震，地球公转、自转等。在这种情况下，教师就要尽可能地通过各种媒体（如幻灯、录相、挂图、模型……）让学生观... Logical Inference Lesson Leverage Heuristic □ Hai Cheng Teachers' Training School Zheng Guilan Some objective fact inconveniences allow students to observe directly in the classroom during logical reasoning classes such as solar eclipses, lunar eclipses, the lunar surface's natural conditions, volcanic earthquakes, earth Revolution, rotation and so on. In this case, teachers should try their best to make students view through various media (such as slideshows, videos, flipcharts, models ...).