蔡海燕老师执教的大班科学活动“泡泡乐”(请见P33《奇趣“方泡泡”玩出新世界》一文)是一个“以兴趣为先导,以探究为主线,回归学习主体和课程本质”的优质集体教学典型案例,它既有活动前的精心预设,又显活动中的随机生成,具备了优质集体教学的四大要素。内容选择“佳”——源于敏锐的专业捕捉1.无意的发现,专业的捕捉本教学内容,来源于蔡老师看《是真的吗》电视节目时的“无意” Cai Haiyan coached the big class science activities “bubble music ” (see P33 “interest to lead, to explore the main line, Returning to the main body of learning and the nature of the curriculum ”, a typical example of high quality collective teaching, which has meticulous pre-event planning and explicit activity generation, possesses the four elements of high-quality collective teaching. Content selection “good ” - from a keen professional capture 1. Inadvertently found that professional capture this teaching content, from the teacher to see “is it true” TV program “no intention ”