http://www.washingtonpost.com/blogs/answer-sheet/post/khan-academy-readers-weigh-in/2012/08/02/gJQALiNgQX_blog.html
A host of readers of The Answer Sheet weighed in about teaching slope and the Khan Academy. At the top is the response Fred Peck and I wrote and posted to MathEd.net.
A host of readers of The Answer Sheet weighed in about teaching slope and the Khan Academy. At the top is the response Fred Peck and I wrote and posted to MathEd.net.