(As for paper, I recommend not using foil paper until you’ve had a chance to practice with some of the more basic papers. While foil papers can be beautiful, they are also much less forgiving of mis-folds! And most important of all.… before you begin, make sure your paper is a perfect square — equal on all sides!)
I will be making cranes with my 6th graders this week, but a motivated 4th grader could also handle this project. I like to have my students fold their cranes along with me as I demonstrate with a larger piece of paper. Some students will need individual attention when they get “stuck”, so if you have a large class, it’s a good idea to have extra parent volunteers circulating the room. I also give each student a page of printed instructions to follow, which they can take home if they feel inspired to keep folding!