If anybody would like the 4th grade Math Connects book, along with the teacher edition, please let me know and you can have it for the cost of postage. Teacher edition says Volume 1, so presumably there is another volume that I don't have--the student book matches the teacher edition, though. DS7's preschool teacher gave them to him several years ago. They are unused, as he learned all that stuff without ever getting around to them, LOL!
I believe they will both fit into one of those flat-rate boxes that ship for $10-something.