http://www.scoop.it/t/comics-and-cartoons
Check out the link below. There are cartoons for many subject areas as well as ones you may want to use with your friends. I was thinking that adding a little humor into our students' day would be a great way to connect with them as well as so reduce some anxiety for those who get uptight prior to tests etc. Another thought is that some can be used as story starers and the students could add a few more frames to develop a comic of their own.
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http://www.glasbergen.com/education-cartoons/