I've been teaching systems thinking for years in many different classes using curriculum that I have pieced together from diverse sources and developed myself. Next year for the first time I'll be teaching a semester-long systems modeling class focused on sustainability issues for high school juniors and seniors. I'm wondering if anyone has suggestions of textbooks or curricular materials that might be useful for this. I already have a copy of Diana Fisher's Modeling Dynamic Systems: Lessons for a First Course, The Systems Thinking Playbook, and Thinking in Systems by Meadows. I just wanted to see if there are other books or pieces of curricula that I ought to know about or that others have found particularly effective.