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Leah Alcala, 8th grade master teacher, shares her math warm up routine that is also a effecient, effective, and student-liked assessment technique.

THIS short video has been a favorite on TEACHING CHANNEL for many years, and for many thousands of teachers.

Posted here cuz … we luv it.  We know you will too.

Teachers old and young love this simple, insightful, powerful method of reflecting students knowledge back at them – to complete the circle of learning and truly and simply learn from their own mistakes, via their teacher’s favorite “no” – her favorite wrong answer.