Rays Arithmetic

We use Ray’s Arithmetic and love it.  I have one kid in the first book, and my oldest working his way through the 2nd book.  I have never used anything other than Ray’s, but I would imagine that switching from any K program would be an easy transition.  The first book covers mostly the basics – addition, subtraction, multiplication and division.  At the end, it covers measurement and time.  I would start at the beginning of the book – if he’s already familiar with addition and subtraction, it will give him a lot omre practice in word problems and serve as a review at that time, before moving onto Multiplication. 

Yes, I do.  Granted, I don’t have anything to compare them to, since we’ve only done Ray’s aritmetic, but even now in the second book of arithmetic, my oldest son does most of his work mentally.  I also notice that they are really good at word problems, because Ray’s has a huge focus on word problems as well.