div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=chen-yubei-pan-kaijuan-sigg-viviane-laure-2017-1pdf-chen-yubei-panhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: CHEN Yubei PAN Kaijuan SIGG Viviane-laure @ 2017 1pdf · CHEN Yubei PAN Kaijuan SIGG Viviane-laure @ 2017 The Active Classroom The Education University of Hong Kong Checkpoints loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsfrreader033viewer20220505015f93c8a60cee684e2b5fcf74html5thumbnails1jpg width=140 height=200 divpCHEN Yubei PAN Kaijuan SIGG Viviane-laure @ 2017pdiv