They can share the designed Integrable Ware so the teacher can make courseware like building block to reduce the difficulty of making the courseware, reduce courseware development time and to improve resource utilization. 对开发出的积件在一定范围内共享,教师能像搭积木一样制作积件式课件,从而降低课件制作的难度、减少课件的开发时间,并提高资源的利用率。