课前准备布置学生课前仔细观察一元或五角或一角的硬币 ,然后写下它们的特征。教学过程一、创设情景 ,激发习作兴趣教师出示事先准备的几种各时代不同的硬币 ,并作简单的介绍以引起学生的兴趣。二、明确目标 ,讲明活动规则老师 :今天 ,我们一起来玩一个“猜硬币”的游戏 ,请同 Preparing for the Class Before class, carefully observe the coins in one dollar, pentagon, or corner and write down their characteristics. Teaching process First, the creation of scenarios to stimulate interest in learning Teachers pre-prepared several different coins of different periods, and make a brief introduction to arouse the interest of students. Second, a clear goal, specify the rules of activity Teacher: Today, we play together a “guess coin” game, please