Abstract
This paper reports on the correct responses and correct-response strategies for word problems from a longitudinal study of grades 2 and 3 children's mental computation strategies for 2 and 3 digit addition and subtraction. Children were found to use increasingly powerful strategies across the two years. However, the pen and paper algorithm tended to become dominant.
T.]. Cooper, A. Heirdsfield and C.]. Irons
Years 2 And 3 Children’s Strategies For Mental Addition And Subtraction