这是一节清新、欢快、激情、流畅、体现建构主义思想的课 ,是从指数函数 ｙ =2 ｘ 的图象出发 ,以学生思维为主创 ,建构出对数函数及其性质的成功课例 ,特别是周老师在教学中对学生尊“思”、重“思”的突出做法 ,给读者留下深深的印象 .下面从培养学生思维角度 ,借用周老师几 This is a refreshing, cheerful, passionate, fluent, constructivist lesson. It is based on the image of the exponential function y = 2 x. It is based on student thinking and builds a successful lesson on logarithmic functions and their properties. In particular, Teacher Chou has left a deep impression on the reader’s outstanding practice of “thinking” and stressing “thinking” in teaching. From the perspective of cultivating students’ thinking, he borrowed several teachers from Zhou.