教学目标:1.学生在掌握了100以内数的基础上,了解数的产生和发展的漫长历史。2.学生通过学习有关数的历史资料,了解数的演变与发展。3.学生能通过学习数的有关历史,进一步增强学习数学的兴趣。教学过程:一、了解古人的记数方法谈话:小朋友们,我们每天都要和数打交道,但在很久很久的远古时代,人们是怎么数数的呢,这节课我们就来做一回古人,体验一下古人的记数方法,了解数数的历史。小结:其实同学们刚刚说到的“用石子记数”、“结绳 Teaching Objectives: 1. Students grasp the number of 100 based on the number to understand the long history of the emergence and development. 2.Students learn about the evolution and development of numbers by learning historical data about numbers. 3. Students can further enhance their interest in learning mathematics through the history of learning numbers. Teaching process: First, understand the ancient method of counting Talk: Children, we deal with the number every day, but in the long, long time ago, how people counted? In this lesson we will do a return to the ancients , To experience the ancient method of counting, to understand the history of the number. Summary: In fact, students just said ”with the stone count “, ”rope