About a decade ago, leaders at the Kentucky Department of Education set out to develop guidelines for what quality math instruction should looked like in the state, convening educators from the ...

Anthony Bonato does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Numberphile revived an ancient multiplication trick—halves and doubles—also called Egyptian or Russian math, where you repeatedly halve one number and double the other. After crossing out rows with ...