Thanks to my mom and all her perusing the Internet for printables, I had a number of printouts with animals. They worked perfectly for animal classification. I cut the pictures apart and then wrote "Mammals" and "Fish" on a large sheet of paper. I had Sam tell me what he knew about each category. I prompted him a little and soon we had a few simple characteristics of each. Then he took the pile of pictures and glue and set to work deciding which category they fit it. This took him a long time due to glue problems; we need more gluesticks.