D10: Ss WB how candles burn before quiz. Good to point out not all things gain mass when burned! #teach180 http://pic.twitter.com/CK3m84rOeY
— Laura Wang (@laura_c_wang) September 20, 2017
D10: Ss WB how candles burn before quiz. Good to point out not all things gain mass when burned! #teach180 http://pic.twitter.com/CK3m84rOeY
— Laura Wang (@laura_c_wang) September 20, 2017
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