以地理实践活动为载体的探究性学习是地理新课程教学的重要方式。经纬度测量活动是理论学习、动手实践及问题探究有机融合,是根据太阳周日运动、太阳高度角日变化原理及时差换算方法,设计活动过程。探讨过程中引入磁偏角和均时差相关知识,有助于学生准确理解经纬度测量的知识,消除测量活动中的认识误区。 Inquiry Learning Based on Geographical Practice Activities is an Important Way of Teaching New Geography in Geography. The measurement of latitude and longitude is a combination of theory study, hands-on practice and problem exploration. It is based on the sun’s day-to-day movement, the principle of solar daily diurnal variation, and the time difference conversion method. The introduction of knowledge about declination and time difference during the discussion helps students to accurately understand the knowledge of latitude and longitude measurement and eliminate misunderstandings in measurement activities.