jiao xue de wen yu bian =: essentials of learning and variation in teaching / jiao xue de wen yu bian =: essentials of learning and variation in teaching/ Jiao xue de wen yu bian =: Essentials of learning and variation in teaching / Jiao xue de wen yu bian =: Essentials of learning and variation in teaching/ jiao xue de wen yu bian/: essentials of learning and variation in teaching, Jiao xue de wen yu bian/: Essentials of learning and variation in teaching, Essentials of learning and variation in teaching. Essentials of learning and variation in teaching 并列题名：Essentials of learning and variation in teaching