I am planning this for this year as well for my 3 boys (12,11,8). I printed each of them the student workbook on our laser printer here at home, and then took it to office max for spiral binding, cover and back. I also printed and bound the teacher book for me as well. I took the animal part in to have printed at office max, didn’t bind it since it’s going to be cut up and all the pics are in color. I’m excited to go through it with my guys and I think they are going to love it. The binder idea also sounds great, but we already have to many binders to keep track of, so this was a better option for me.