Republicans faced mockery in the last few years for inventing their own words. Rep. Paul Ryan did them one better. He invented his own math. An hour after its birth, his budget was hailed as a ...

The present paper describes the success, the methods (mental, informal written, standard algorithm) and the strategies of informal written arithmetic to be observed when 300 elementary students worked ...

Achieving fluency with basic subtraction and add-with-8 or -9 combinations is difficult for primary grade children. A 9-month training experiment entailed evaluating the efficacy of software designed ...