I broke students into groups and gave each group a different book to read. The topics were conserving water, keeping lakes/rivers/oceans clean, keeping the air clean, and conserving electricity. Each group created a poster using any app of their choice. Ahead of time we talked about and looked at different posters. We discussed the fact that posters are filled with a picture and usually have little text. The text is used to give a specific message. The apps the groups chose were Doodle Buddy, Drawing Pad, and Strip Design.