I wanted to share another great resource for building number sense and developing numerical fluency. I have only read the first book in this three book series, but it was phenomenal. If you’ve been reading the Kathy Richardson book we’ve been discussing for Book Study Mondays, and the methods she uses for adding and subtracting numbers leave you a bit unsettled, this book will help fill in those gaps. In addition to the casebook, you can also get a facilitator’s guide. GREAT for a staff book study.