Abstract: Current education and teaching are mostly closed in physical boundaries,highly depending on teachers and textbooks,and deficient in the reuse of learning knowledges.For these limitations,we propose the concept and method of crowdsourced learning(CL) by drawing on the ideas of crowd intelligence and open source software.The core idea of CL is to break the boundaries of traditional classes,grades,and schools,and allow learners to engage in autonomous and collaborative social learning around specific themes in the form of open communities,such as problem discussions,experience sharing,and resource co-production.Such methods can produce a large number of high-quality and personalized learning resources,help learners effectively conduct course learning and practice,while also help teachers improve the efficiency and quality of course teaching.This paper also introduces the platform called LearnerHub that supports the CL,analyzes the application patterns of CL based on the software engineering course practices.We also evaluate the effectiveness and influence of CL in term of data analyses and investigation survey.The results show that students highly recognize the important role of CL method in course studies and practices,and there is a positive relationship between students' comprehensive practice performance of CL and their course grades.

Key words: Crowdsourced learning, Course teaching, Crowdsourced learning supporting platform, Social learning