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今天是一节新课,学的内容是《长方体和正方体的认识》,尽管我课前经过了精心的准备,但还是意外重重,让人始料未及。意外之一:“一张纸不是长方体?”导入新课后,我让学生找找生活中有哪些
Today is a new lesson. The content of my study is “Understanding of cuboids and cubes.” Despite my elaborate preparations before class, I was surprised by the unexpected. One of the accidents: “a piece of paper is not a rectangular?” After the introduction of the new class, I let students find what life