Marzano - feedback

I enjoyed the section on feedback in the Marzano book. I loved this quote: "The most powerful single modification that enhances achievement is feedback. The simplest prescription for improving education must be dollops of feedback." I thought one of the most important things mentioned was that feedback should be timely. I think most of us are pretty good at giving timely feedback for behavior, but sometimes I find myself waiting way too long to get assignments back to my kids after correcting them. I remember hating it when college professors waited a long time to return my work. I should probably remember that when dealing with my students' work as well!