Imagine if students walked into class each day and you could see a digital box hovering over their heads that told you exactly how much they understood about the topic you planned to discuss. Wow! How would that change your approach to teaching?
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On the first day of a typical class, students are like a room full of black boxes for faculty: what’s inside is a mystery. There’s no way to know how much or little each one knows about the course subject.
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