Kind of cheesy, but they do a good job of getting the information across.
They are short and to the point. Each little cartoon last between 2-4 minutes. There are tons of different topics, though I only look at the mathematics ones.
How I Use It
I use it as an introduction to lessons, or sometimes, to reinforce if they are unclear. There are 10 question quizzes at the end that I have the class do as a whole and it lets them talk and come to a single consensus. These often lead to at least one argument as the kids try to justify their answer. Great discussion points.
The are cheesy though.