Reading about the concept of selling lesson plans got me to thinking why I spent so much time developing original lessons. It is a lot of work, but our love of the given subject and desire to teach it drives us. What's wrong with the textbooks and supplements? Non-teachers think the expensive district materials should be sufficient. They often are not.

I don't think I'm alone in viewing the textbook industry as a racket leaving me scratching my head over who wrote this stuff and questioning if they ever taught the particular level of students. Sometimes I've found blatant mistakes regarding the subject. The subjective nature of some presentations also motivated me to write objective materials when I found key information missing.