My colleagues and I have students write a Synopsis of their learning after every Independent Learning Zone period as well as after Live Investigations. The Synopsis acts as a reflective tool for both large and small concepts. I often tell my students to write what they actually learned or improved upon, not what they THINK I want them to write. I train my students to make a space for the Synopsis in their notebook headings. Occasionally, I will have my students read their Synopses out loud, but most often I walk around and do a quick check, as they are mostly a personal reflection for my students.
During an Independent Learning Zone session, every student in my blended classroom is working independently on a different set of problems. It's impossible for me to be an answer key for 25 different students doing 25 different problem sets, so I print out their respective answer keys in advance and give each student his or her about 5-10 minutes into the period. This empowers them to monitor their own academic performance and self-correct as they are completing their assigned task.
Anytime I can bring a student up for a demonstration it usually captures the other students' attention much more than I do. Having a physical connection can help with internalizing the mathematics.
The grouping algorithm employed by School of One assigns students a new lesson every day based on the student's most current learning needs. The algorithm actually learns the students' needs from the previous day's exit ticket. One of the learning styles or lesson types, Live Investigation, assigns students to me who are ready for whatever the assigned skill is. However, within that group, there are still varying levels of ability. I can see all of this on my data report and then I can group within my group. I call this micro-grouping.