教学是在教育目的规范下，教师的教与学生的学共同组成的一种教育活动。在整个教学过程中教师是起主导作用的因素，要使其主导作用发挥出最好的效果，教师需要对自己的教学活动进行周密的思考和精心设计。教学设计就是教师用系统方法把各种能够利用的教学资源有机地组织起来， Teaching is an educational activity composed of teacher’s teaching and student’s learning under the standard of educational purpose. In the whole process of teaching, teachers play a leading role. To make the best use of the teacher’s role, teachers need to think carefully and carefully design their own teaching activities. Instructional design is that teachers use systematic methods to organize all kinds of teaching resources that can be used organically,