Hi Mark:
Lots of excellent examples. When we convey all we have as teachers, good students will take that preparation, and take further. That's the difference in just teaching vs students learning. So, if our goal is to teach, that's just a job and there may not be any positive outcome. But as educators, that suggests we have taught and students have learned. And because of that, they use their knowldge in ways that help make our world a beeter place to live.
Regards, Barry