Guided by the theory of activity instruction and based on the instruction platform of LAMS, this paper studies the application of the theory of activity the learning in teaching practice and puts it into practice. Firstly, there is a brief introduction of LAMS and its characteristics and correlative applications, bringing up the principles of activity instruction and its correlative teaching strategy. In the instructional design dissertation for the public class of education technology, the students can study by themselves and get personal experience while combining the activity theory with LA...