122整式的加减法导学案内容摘要:
课前练习 探索练习 求下列整式的值:(- 3a2- ab+ 7)-(- 3a2- ab+ 9),其中 a= 21 , b= 3 摆第 1 个“小屋子”需要 5 枚棋子,摆第 2 个需要 枚棋子,摆第 3 个需要 枚棋子。 按照这样的方式继续摆下去。 ( 1)摆第 10 个这样的“小屋子”需要 枚棋子 ( 2)摆第 n 个这样的“小屋子”需要多少枚棋子。 你是如何得到的。 你能用不同的方法解决这个问题吗。 小组讨论。 教师活动 (环节、措施) 学生活动 (自主参与、合作探究、展示交流) 教师活动 (环节、措施) 学生活动。122整式的加减法导学案
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