div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imagea href=https:reader040fdocumentsusreader040viewer20220308095b1834127f8b9a1e258b97behtml5page1jpg target=_blank img data-url=document-2017-07-14introduction-teachers-tips-on-a-concave-mask-of-a-face-seemshtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: · · 2017-07-14Introduction Teachers Tips on A concave mask of a face seems to follow you as you move Saltwater Pentacell Make a saltwater battery and light an LED Sensitive loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader040fdocumentsusreader040viewer20220308095b1834127f8b9a1e258b97behtml5thumbnails1jpg width=140 height=200 adivdiv