This is a cute, one-day lesson I found over at davinciswings.blogspot.com. I had pinned this lesson months ago and decided since Spring has sprung and the bugs will be out...what better time to do symmetrical bugs? Also, the 2nd and 3rd graders are working on lines of symmetry. So, we discussed examples of things around the room and in nature that are symmetrical. I drew several shapes on the board and the students agreed on which ones were symmetrical and which ones were not. And, lastly, I showed them examples from Da Vinci's Wings so they could see some student work.
(I have no idea why this is in italics, but just go with it...my 'I' button is not working at the moment...)
Here are some examples from 2nd grade: