SPOC in Shandong University are described. The students - centered teaching concept is the center through the

whole process. The problem-based teaching method has been used to stimulate the study initiative of the students

for the online study. With the help of the Rain Classroom，the mutual-motivation teaching is used to encourage the

class participation and to improve the students’integrative ability for the offline study. Our experience over the

years has proved that the blending teaching mode combined with traditional face-to-face teaching should effectively

improve the teaching result for the large-class college physics.