新课程提倡自主、合作、探究学习。学生是学习的主人,教师只是学习中的组织者和引导者,积极倡导自主、合作、探究的学习方式给教师的教学和学生的自主学习留出了更多的空间,让每位学生都能独立思考,并在此基础上,使学生形成独特的感受与体验。使之成为知识的主动发现者和探究者。本课就是通过学生自主探究小组合作学习来生成的。本节课完全放手,让学生从直角三角形出发,发现直 The new curriculum advocates autonomy, cooperation, inquiry learning. Students are the masters of learning. Teachers are only the organizers and guides in learning. Actively advocating autonomous, cooperative and exploratory learning places more room for teachers’ teaching and independent study for students, so that every student can Independent thinking, and on this basis, to enable students to form a unique feeling and experience. Make it an active discoverer and explorer of knowledge. This lesson is generated through student self-exploration group cooperative learning. This class completely let go, let the students starting from the right triangle, found straight