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Posted July 6, 2011
This book is a good resource specifically for mental math in the vein of Greg Tang, etc. I teach 4th grade and received this today. It begins with mental math strategies for 2 digit addition so I went ahead and ordered the version for primary grades.
It contains about 40 VERY BRIEF lessons and reproducible pages for focusing students on mental math. It includes strategies on compatible numbers, adding left to right, etc. I think it will be very handy this year as I work with my students to increase their computation speed.
You probably need some previous experience with these strategies to use them in class. This book is not very thorough when it comes to explaining the reasoning behind the work.