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曾听过一节校内公开课,笔者留下了一些思考。教者在教学“梯形面积计算”时,先回顾了梯形的认识,复习梯形各部分的名称,然后向学生提问:怎样计算梯形的面积呢?你准备怎样来研究面积计算的公式?本意想激发学生探究面积计算公式的欲望。可是,课堂上却出现了学生过早“兜底”的尴尬情景:【片断纪实】生1:(手举得老高,急于回答)我知道!把梯形的上底加下底的和乘高再除以2就可以了。
Have heard of a school open class, I left some thinking. When teaching the “trapezoid area calculation,” the teacher first reviews the trapezoidal knowledge, reviews the names of each part of the trapezoid, and then asks students questions on how to calculate the area of the trapezoid. How are you going to study the formula for area calculation? Want to inspire students to explore the area’s formula of desire. However, there are students in the classroom too early, “Dugidou ” embarrassing scene: [piece of documentary] Health 1: (hands held high, eager to answer) I know! The trapezoidal upper and bottom plus and multiply High then divided by 2 on it.