HI All,
This link leads you to a beautiful Mexican art site from the Museum of Fine Arts in Houston.
Teacher resources, lesson plans, online activities. It is a very nice artistic and cultural review of the exhibit and the art, including a time line with a version for kids and for adults, and information about the collectors.
(They have diagrams on how to make a one sheet of paper book. I use this style book when I teach line to 1st grade.)