综合性学习：走进信息世界.doc

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several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
（3）谈谈开展综合性学****要注意的事项。
2揭示主题。
从今天开始，我们要开展一次新的综合性学****走进信息世界。
（1）说说对“信息世界”的了解。
（2）谈谈你对这次综合性学****的期待，或者说你希望在这次活动中能开展哪些活动。
（教师要认真倾听学生的想法，尽可能的纳入到即将制定的活动计划中去。）
二、浏览教材，交流感受
1自由浏览整组教材，感兴趣的地方可以读得仔细一些。
2交流浏览教材后的感受。
（1）浏览了教材，你知道了一些什么？
（2）你产生了哪些困惑或疑问？
（3）你认为这次综合性学****可以开展哪些活动？
（教师要注意倾听，特别是学生的困惑、疑问和活动建议，这些要成为最终的活动的计划的有机组成部分。）
二、分组讨论，制定计划
1重点阅读：单元导语、两个活动建议以及最后的结语。
（1）自由阅读，你认为有价值的可以画下来。
（2）课堂交流：单元