I have been collecting pop-up books ever since I took a course on the history of children's literature and did a research project on the history of the movable book. Last week, I received the newest offering from Mo Willems entitled, BIG FROG CAN'T FIT IN. Before I could even remove it from the plastic sleeve, two of my colleagues pounced in it and played with it until they have uncovered every movable part. Today, when I got to the office ahead of the throng, I had my chance.
Frog is too big to fit into a book. Solution: a bigger book. Lots of fun with perspective here and the pop-ups though simple are clever in design and in engineering.