During this most recent trip to Vietnam, I bought more books. Some are the language curriculum books for 1st grade. I bought some in Hanoi, then bought some in Saigon.
This is 1st grade text book, part one. There is another set of books which look a lot like these, but with pinkish purple covers. The two sets cover one years worth of material. These are the ones from Saigon, they are much more child friendly with color pictures and lessons broken up into smaller segments.
This is the workbook. It has some matching exercises and some writing.
This is a writing practice book. It has practice pages that correspond with the lessons in the book.
This is a book of stories that goes with the 1st grade curriculum. I'm having some difficulty reading them, I think they're read alouds with some questions to be asked of the students.