The classroom is his stage, and students his rapt audience. Charismatic chemistry teacher Tom Sangiorgi, 46, mesmerizes the kids at Townsend Harris High School in Flushing, Queens, with lectures that ...
Gabriela C. Weaver doesn’t lecture to her general chemistry students—at least not in class. She records short lecture snippets that the students watch online before showing up. During the class period ...
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