1) Good, because it was a teenage way of learning math, because teenagers are the teachers, but the problem was that if you go to the blog to study.. you don't know if there was a class that someone didn't post. Pretty much everyone did them and checked them, also it was an easy grade so many people liked it.

2) As I said before, learning from teenagers is easier to understand, and also you get desperate when it's your day to post so you'll never forget what you post (because of excessive attention to the class) and also, if you missed a class, it is an easier way to your classmates help you. The problems are that if someone didn't posted or understood something wrong the post will be wrong and whoever reads it will learn wrongly( only if you mrs don't see the mistake, but anyways.

3) Well, it is good the way it is, but the only thing is that there should be warned when there were no post in the day, and also actually use it to put/explain projects like it was used for the tangram project.. and never used again :P but it's good and is also an easy grade.