This is a great technique. I wish everyone, and especially teachers, would adopt it. I think the fellow who writes waitbutwhy.com is using something like this

This is a great technique. I wish everyone, and especially teachers, would adopt it. I think the fellow who writes waitbutwhy.com is using something like this. Also, I once read an interview with the wife of Jonas Salk, the inventor of the polio vaccine. She said she met a great many people working in the sciences and technology, and the really smart ones could explain the heart of what they were doing in a clear and simple manner.