Informative, entertaining, fun to watch and learn
All your lessons and very enjoyable to watch. Great for children to watch and learn, even if they don't know exactly what's going. Maybe pre-teens would find this enjoyable to watch. And I also loved the way you created examples and made everything as simple as you could so that it would be easy to understand, without constant babbling without a visual view. I'm not one to be as smart and informational as most anyway.
That, and the only fact I doubt is the "end of the world" date in 2012. The Mayans(or was it Aztecs... agh I forget) Couldn't make a bigger calendar, even if it was pretty huge. Even if they couldn't fit it, they had no other way to create a whole new calendar. Either that, or maybe the calendar symbolized a cycle of years of the world's life. I'd have a lot more to say, but typing a whole lesson on a review wouldn't do much good. I think.
Anyways, everything was great. Actually learned something for once than just playing Black Ops all day. Keep it up^^