“比例尺表示图上距离与实际距离的比。”从比例尺的意义上看,比例尺是距离比,但部分学生仍把比例尺等同于面积比,这两种观点,谁对谁非,我们还是通过一个问题案例来说明命题的真与假。数学课上,学生通过互动学习,已掌握、理解了比例尺的意义,在进行知识拓展运用时,我设计了一道贴近学生生活的数学实践问题。“段家集乡中心小学操场是一个长方形,经测最,操场的长是80米,宽是30米,现在要把学校的操场绘制在比例尺是1:1000的图纸上,图纸上操场的面积是多少?”让学生分组合作解 “The scale shows the distance between the map and the actual distance ratio.” “In terms of scale, the scale is the distance ratio, but some students still equate the scale with the area ratio, these two views, who is right, we are still Through a case of a problem to illustrate the true and false propositions. In mathematics class, students learn and understand the significance of scale through interactive learning. When designing knowledge, I designed a mathematical practice that is close to the life of students. ”Duanjiatuo Central Primary School playground is a rectangle, the most measured, the playground is 80 meters long and 30 meters wide, and now we should draw the school playground in the scale is 1: 1000 drawings, drawings on the playground What is the area? "Let students work in groups