Marj-
Cool lesson. Did you take students to do the "fishing"? You are fortunate if you did. We used to go to Barney's Joy annually and do simple field testing. With budget restraints we have to stick close to home. We have some pollywogs and caterpillars we are measuring and photographing to be applied to ImageJ for analysis later on. These tools are unique and I find new ways to apply them to the regular daily activities all the time. Thanks for the ideas. See you soon.
Andrea

Very nice lesson. Seems it would be very interesting to students. Great resources! Thanks!