本课例依据五星教学模式的“结构-指导-辅导-反思”学习循环圈,以“聚焦解决问题”为宗旨,围绕“激活原有知识”、“展示论证新知”、“尝试应用练习”和“融会贯通掌握”四个阶段进行教学活动。学情分析学生已经熟悉了小学阶段所学的所有简单平面图形的特征,会用公式计算它们 This course is based on the “structure-guidance-counseling-reflection” learning circle of five-star teaching mode, focusing on “focusing on problem solving” and focusing on “activating original knowledge,” “demonstrating new knowledge,” “attempting to apply practice” “Mastery grasp” four stages of teaching activities. Student Analysis Students are already familiar with the characteristics of all simple flat graphics learned in elementary school and will use formulas to calculate them