Both use the same number of units and the same two folds, plus a common connecting unit. But with the two folds, one is inverted and one is not. This made for two quite different end products!
Neither is as nice as I'd like them to be, but are acceptable as first attempts. They went together easily enough but are hollow so are a bit flimsy--the one with the map pages I made before is rdiculously strong, like iron...and heavy! I need to work on making my folds crisper and on making the units fit together tighter.