新的课改理念倡导学生的“合作探究”意识与教师的“开放式”教学意识,在这两种基本理念下,笔者设计了如下一堂开放型的几何习题课(整堂课始终围绕一个中心图形展开,由学生自己去添加线条演变成新的题情,环环相扣,步步为营). The new curriculum reform concept advocates students’ awareness of “cooperative inquiry” and teachers’ “open” teaching awareness. Under these two basic concepts, the author designed the following open geometry exercises class (the entire class has always centered around a center The graphic is expanded and the students themselves add lines to evolve into new questions, interlocking and step by step.)