Back in the day, that is, the early 90s, I learned from Professor Suzi Shapiro, of Indiana University East, about her Ultimate Portable Brain Model. Somewhere, in the intervening years between then and now, I lost the idea. Fortunately, Dr. Ali Mattu had discovered it and created a wonderful video to show our students how to use it. Simply put, it is a fantastic learning tool. So check this out and share it with your students!!!