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Simplicity
I was looking for some methods of presentation for my teaching objectives when I was in Lower School. Power Point slides became my life saver at that time.
I think I have read a lot of interesting things on this site—Presentation Zen.
Simplicity is the essence for maximum grasp of a subject. I think that a visual medium with less information but more expression lasts longer in the minds of the learners than a series of explanations.
Before:

Julia, nice job putting what we’ve learned into action. I won’t pretend to understand the text, but I think I get the main idea. Did you find that the kids were more receptive and involved with this altered version? You’ve always been one to try out new ideas, and obviously you continue to do so. I’d be curious to know if the new presentation took you longer to prepare. I think that fact that you focused your message around one image probably cut down of the searching quite a bit. I must admit that once I start searching I sort of get lost and waste too much time looking for that one perfect, yet elusive image. Thanks for the simple and purposeful example.