“制作一个五角星”是人教版《义务教育 课程标准实验教科书·数学》七年级上册第三 章的一节活动课,本节课是学生学了“多姿多 彩的图形” “直线、射线、线段” “角的度 量”和“角的比较与运算”之后的一节课,主 要向学生展示生活中的几何图案,对培养学生 用数学的眼光观察周围的世界、从数学的角度 运用所学的知识和方法发现问题并解决问题以 及培养学生的审美意识具有重要意义。 “Making a pentagram” is an activity lesson in the third chapter of the seventh grade of the third edition of the “Educational Compulsory Course Standard Experiment Textbook Mathematics” book. This lesson is for students who have learned “various graphics”. “Lines, rays, segments” “Angles” and “Angle” comparisons and calculations "after a class, mainly to show students the geometric patterns of life, to train students to use mathematical vision The world around us and the use of knowledge and methods learned from mathematics to find problems and solve problems and cultivate students’ aesthetic consciousness are of great significance.