This year we're continuing to use Math U See for our main math curriculum. Princess enjoyed it last year, but it seems we were missing a bit. This year I've linked MUS Beta with various living books and fun activities. I also added extended units on measurement, geometry, and the calendar. Living Math has an extensive list of books for almost every math subject. This was a tremendous help to me. And I don't know if this happens to just me, but I have all these fabulous manipulatives, games, and Montessori cards, but never use them quite as much. This year I linked it all together in one place. Here's the word document that links it all together. And then there's my Big Boy who loves to do what big sissy is doing. I did order the MUS primer, but will use it loosely and link a lot of living books with it. I'm finishing up the word documents and will upload when done.