Combining Online and Offline Blended Teaching with “Flip Classroom” to Teach Ester Condensation Reaction
PENG Xiao-Xia1**, LI Nan2, REN Li-Lei1, YU Jia-Xin1, LI Yan-Fang1
1. Faculty of Chemistry and Material Science, Langfang Normal University,Langfang 065000, China;
2. Faculty of Computer Science, North China Institute of Aerospace Engineering, Langfang 065000, China