材料：下面是张老师在“我国太阳能的空间分布”一课中的教学片段。
张老师：(投影“中国年太阳辐射量分布图”)我国太阳能的空间分布有什么规律?
王同学：(站起来指着图说)我国太阳能分布规律是西部多，东部少，从东部向西部逐渐增加。
李同学：(站起来反对)老师，我觉得他说错了，或者是地图搞错了。您说过地势越高，气温越低，青藏高原是我国7月平均气温最低的地方，而图中显示那里是太阳辐射量最大，这不是很矛盾吗?所以，我觉得说青藏高原是我国太阳辐射最大的地方，一定是弄错了。
张老师：同意李同学观点的请举手。
(全班近五十个同学中，有七八个同学举了手)
张老师：看来大部分同学还是赞同王同学的意见。对的，我国太阳能分布规律是西部多，东部少，从东部向西部逐渐增加。那么，同学们有没有注意到我国年太阳辐射总量最低的地区是哪里呢?
问题：
张老师的教学设计有哪些优点?(6分)有哪些不足?(4分)
正确答案及解析
正确答案
解析
优点：
①采用地图法进行教学。给学生提供地图，让从地图中获取相关的信息，得出太阳辐射的空间分布规律。
②教学形式开放，注重探究。让学生积极思考，发表自己不同的见解，学生大胆猜测，可以提高学生的探究能力。
③善于采用案例进行教学。通过学习青藏高原、四川等地区的太阳辐射，得出影响太阳辐射的因素，能够透过现象认识本质。
缺点：当学生的思维步入认知的误区后，没有及时地进行点拨和引导：学生回答完毕后没有进行总结和归纳；对学生的回答缺乏评价和鼓励，容易打消学生学习的积极性。
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