Anne in Australia left me a comment that she and her group we able to construct the Envelope Number Line that I described in my two previous posts, but, in her words, ” our group of 4 found it difficult to fold it into a book which was predominantly our aim.” I responded to her comment by emphasizing that if they were careful about making sure that the title page stayed visible during the back and forth folding process, that things should go well. 667 more words