1) Feedback or assessment for learning has been shown to have a large effect size of 0.81 based on prior research. It focuses on identifying errors and misconceptions in order to improve learning. 2) The teaching/learning process is oriented around constructing new knowledge through goal setting and applying concepts in a differentiated manner. Feedback helps students apply their understanding to answer questions or create products. 3) Feedback involves reviewing student work to identify faults and close gaps, as well as focusing on what students did well and setting targets for improvement. It provides a window into students' understanding of concepts.