一、回望的意义在认识上蒋过去已经解决的问题材料重新组织,并运用新关系再次获取问题论证的思维过程叫回望.回望用于解题,首先是审视文字与图形,重新认知问题性质,然后跳出原有的思考范围,从新的角度寻求题解策略.例1在你家中,同时工作的用电器越多,干路中的电流是越大还是越小?为什么?(“欧姆定律”教材习题)思路: First, the meaning of the lookback In the understanding of the problem Jiang has solved in the past to re-organize the material, and use the new relationship again to obtain the problem of the argument process is called look back. Looking back to solve the problem, the first is to examine the text and graphics, re-recognized Know the nature of the problem, and then jump out of the original scope of thinking, and look for a solution strategy from a new perspective. Example 1 In your home, the more electrical appliances that work at the same time, the larger or smaller the current in the trunk road is? Why? Ohm’s Law“Teaching material exercises” ideas: