教学媒体,是以教学为目的的信息承载、加工和传递的介质或工具。它既是教学内容的载体和表现形式,也是师生之间信息交流的工具。科学合理地使用教学媒体,能够让课堂教学结构清晰、层次分明、简明高效,进而更好地促进学生的思维发展和能力提升。本次“课例大家评”活动,不仅提供了课例“正比例函数的图像”的设计文本,还提供了与之相匹配的 Teaching media is a medium or tool for carrying, processing and delivering information for the purpose of teaching. It is not only a carrier and form of teaching content, but also a tool for information exchange between teachers and students. Scientific and reasonable use of teaching media can make the classroom teaching structure clear, structured, concise and efficient, and thus better promote the students’ thinking and ability to enhance. This “lesson everybody comment ” activity, not only provided the lesson plan “the picture of the proportional function ” the design text, but also has provided the match