前不久,我执教了一节送教下乡课“长方形、正方形面积的计算”。课中,孩子们很快提出“我想知道长方形的面积与长方形的什么有关”的问题,并根据已有的知识经验进行积极的猜想。他们认为:“长方形的面积可能与长方形的长和宽有关系。”随后在钉子板上进行验证,并通过对几个已知长和宽的长方形面积的研究,孩子们发现这几个 Not long ago, I coached a section to teach rural areas to teach “rectangular, square area calculation ”. In the class, the children quickly put forward the question “I want to know what the area of ​​the rectangle is related to the rectangle” and make positive conjectures based on the existing knowledge and experience. They think: “The area of ​​the rectangle may be related to the length and width of the rectangle. ” Then verify the nail board, and through the study of several known long and wide rectangular area, the children found that several