Previous teacher misplaced some sheets in this entire book but still usable for a classroom missing pgs 17-20, 23-28, 35-36, 39-44, 47,48,61-64,69,70,81-88, 99,100,103-116,127-134, 139-142 still has life to it. Made it into a binder to remove pages to make your classroom copies and return the page back to its sleeve for safe keeping for the next year students.