RightStart™ Tutoring Number Sense
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This RightStart Tutoring Number Sense manual is about the application and use of number sense - the understanding of numbers and the quantities they represent. Number sense provides order to math and provides a strong foundation needed for future math learning. The RightStart Tutoring Number Sense teaches basic addition and subtraction as well as four-digit addition and subtraction.
So far this has been a good help for my third grade boy who has had a difficult time with numbers.