#1stGrade #science #investigation to explore light & the difference between #translucent & #opaque. #NGSSchat #saspudong #inquiry @dmerker1 http://pic.twitter.com/I6b8N1sfhY— Sanna Erzinclioglu (@serzinclioglu) April 19, 2017
via Twitter https://twitter.com/serzinclioglu
April 19, 2017 at 12:02PM
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