Abstract: To solve the problems existing in the traditional experiment teaching of polymer modification experiment, online learning, offline experiments and online development were combined by taking the advantage of small-scale private online course (SPOC). A pre-class learning environment with an emphasis on online interactive learning should be established. Problem-solving-centered classroom practice should be established. After-school extension with expanding knowledge system as the core should be established. Thus, a closed-loop teaching system before, during and after class is formed. SPOC experimental teaching reform is carried out to stimulate students' independence and autonomy in experimental courses, cultivate students' innovative thinking and ability to solve practical problems.

Key words: SPOC, Polymer modification experiment, Teaching reform, Blended learning mode