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一、聋校数学课堂教学的现状情景描述——这是一节应用题新授课,题目为:一个筑路队修筑一段公路。第一周修了8千米,第二周修了7千米,两周正好修了这段公路的1/4。这段公路全长多少米?
I. The current situation of mathematics classroom teaching in deaf school Scenario description - This is a new application course titled: A road construction team builds a highway. The first week of repair 8 km, the second week of repair 7 km, just two weeks to repair this section of the road 1/4. How long is this section of road?