The Huffington Post – Dr. Keith Devlin
“For those of us who find ourselves with the ability to learn math, we will do so with whatever tools we can find, and most of us do just fine. For people like us, Sal Khan’s videos are a great resource. Unfortunately, we are a minority, and a school teacher has the responsibility of teaching all children. And there’s the rub. For the majority who find mathematics extremely difficult, instructional videos have known problems, and we currently know of no approach that comes close to regular group interactions with a good, inspiring, human teacher. “(more)