Problem solving in arithmetic : a study of certain factors in the allocation of arithmetic problems involving one, two, three, and four steps or processes in reasoning / by Leon Nelson Neulen. 1st AMS ed.
Problem solving in arithmetic : a study of certain factors in the allocation of arithmetic problems involving one, two, three, and four steps or processes in reasoning / by Leon Nelson Neulen.
Reprint of the 1931 ed., issued in series: Teachers College, Columbia University. Contributions to education, no. 483.Originally presented as the auth...