水准测量是作为选学内容的教材。对如何进行教学,我们曾经历根本不讲——小课堂上一般介绍——操场上进行测量实习——走出校门搞实地测量的过程。实践使我们认识到:只有把测量知识用于农村改土治碱,兴修水利,为农业大上快上服务,让学生投身于三大革命实践,才能改革教学。 Leveling is a teaching material that is used as the content of the study. As for how to teach, we have never experienced a story—the general introduction in the small class—the measurement practice on the playground—the process of getting out of school and doing the actual measurement. Practice has led us to realize that only when measuring knowledge is used to improve soil and alkalinity in rural areas, water conservancy projects can be built, and services can be provided for agriculture, so that students can devote themselves to the three major revolutionary practices to reform their teaching.