<----- What I DON"T want to see in my class!
Over the years of teaching I have come to realize that some topics are very difficult for my students. I find that the students learn and perform much better if I teach in spurts. I teach a new concept for 15-20 minutes, and then I give my students a "brain-break". What is a "brain- break"? I am glad you asked!!
Hop over to my blog, Science Stuff, and read my complete article.