Building Thinking Classrooms in Mathematics, Grades K-12: 14 Teaching Practices for Enhancing Learning (Corwin Mathematics Series)

by Peter Liljedahl

you can add notation to their work during the gallery walk as you are facilitating a whole class discussion. It is perfectly OK to add notation with your red marker to any student work during the gallery walk. However, it is not OK to erase students’ work. Erasing devalues their work and should only be done when absolutely needed and only with permission.