论文部分内容阅读
1.“做一做” (1) 如果在地图上量得两地间直线距离约为3厘米,使用上页(见课本)的比例尺,算出两地间的实际距离大约是多少千米? 提示:指导学生按比例尺公式进行计算。答案应为:300千米。 (2) 把下表中的比例尺,分别用其它两种形式表示出来。(原题见下表)
1.“Do what you want” (1) If you measure the straight line distance between the two places on the map is about 3cm, use the scale of the previous page (see the textbook) to calculate the actual distance between the two places is about the number of kilometers Tip: Instruct students to calculate according to the scale formula. The answer should be: 300 kilometers. (2) The scales in the table below are shown in the other two forms. (The original question is shown in the table below)