Teacher Karen Crounse at Codman Academy in Boston, MA checks for understanding in her eleventh-grade math class to help all students discover the patterns behind trigonometric ratios.
This video is one of 27 videos that accompany Expeditionary Learning's new book, Leaders of Their Own Learning: Transforming Schools through Student-Engaged Assessment. For more information visit: elschools.org/leadersoftheirownlearning.
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