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在教学中,我常让学生进行「一物多题」练习.如长方体和正方体教学后期,我以木箱为物,编写了一组习题:①一长方体木箱,长、宽、高分别为九分米,七分米、五分米,做这木箱至少要多少平方米木板?②……(条件同上题),它的体积是多少立方分米?③……,如果木板厚度不计,这木箱的容积是多少?④……,从外面量,它的长、宽、高分别为九分米、七分米、五分米,如果木板厚一厘米,做这木箱至
In teaching, I often ask students to practice “one thing, multiple questions.” For example, in the late days of the teaching of cuboids and cubes, I wrote a set of exercises with wooden boxes: ① A rectangular wooden box with length, width and height of Nine meters, seven meters, five meters, at least how many square meters do this wooden box? ② ... ... (conditions with the above title), its volume is how much cubic decimeter? ③ ... ... If the thickness of the board does not count, What is the volume of the wooden box? ④ ......, from the outside volume, its length, width, height, respectively, nine decimeters, seven decimeters, five decimetre, if the wood thickness of one centimeter,