I encourage all of you to use them. I am sure you will like them also. The best teaching model is what works for the children and yourself. Working with students during lunch is fine, but lunch time is taken up with tutorial help and many other administrative duties. I think in theory the idea is excellent but practicality is another issue.
Traditional models focus on teachers as being the sole providers of instruction.
The CLM argues that the aquistion of knowledge requires active participation. Students should observe and question topics that are of interest to them and then investigate those topics to construct their own understanding. By working in small groups, students share, critique, and defend their understandings.