精选优质文档-倾情为你奉上M3 U4 Astronomy: the science of the starsPeriod 1 Reading: How life began on the earth学校:开课班级:高一(12)班 开课教师:指导教师: . Three Dimension objectives 1. Knowledge and ability 1) Help the students find out the main idea of each paragraph.2) Make sure the students fully understand the whole passage and can retell it.3) Enable the students to think and talk about what to protect for the earth.2. Process and MethodsReading and discussing.3. Emotion, attitude a