在授完第一册第三单元以后,我们按教材的要求与部分学生在十一月三十日星期天登上我校最高点做了一个综合性的作业。这天天气晴朗,同学们早晨六点来到了预定的地点,挂起了温度表,架好了太阳高度测试仪、同时放好了拿来的特制钉长为2.5厘米的描绘影子记录板。每隔半小时将温度、太阳高度、影长记录一次,具体记录如下表。图1表示长为2.5厘米的钉子在不同时间下的影长,图中的数据是时间的数据。 Following the completion of Volume 3 of Volume 1, we conducted a comprehensive assignment with some of our students on the top of our school on Sunday, November 30, as requested by the teaching materials. The weather was fine and the classmates arrived at the scheduled location at six o'clock in the morning, suspended the thermometer, built the solar height tester, and set the shadow clipboard with a special nail length of 2.5 cm. Every half an hour will be the temperature, the sun's altitude, long video record, the specific record in the table below. Figure 1 shows the nail length of 2.5 cm in different lengths of time, the figure data is time data.