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2013年9月,在城区小学工作了10余年的我,有幸来到来一所农村小学支教。初来乍到,首先要送上“见面礼”一份——上一节教研课,我选取了五年级上册“梯形的面积”一课。本节课是在学习了平行四边形的面积和三角形的面积之后,学生已经有了图形转化的一些基本经验,因此梯形面积公式的推导完全可以放手让学生自主探究。我的大致教学设想是这样的:先复习平行四边形和
In September 2013, I spent 10 years in urban primary school, fortunate enough to come to a rural primary school to teach. Arrived first, we must first send “a greeting ” a - the last lesson, I chose the fifth grade on the book “trapezoid area ” class. This lesson is to learn the parallelogram area and the area of the triangle, the students already have some basic experience of graphics conversion, so the derivation of the formula of the trapezoidal area is completely free to let students explore. My general teaching idea is this: first review the parallelogram and