A set of guidelines adopted by 45 states this year may turn children into "little mathematicians" who don't know how to do actual math. A few weeks ago, I wrote an article for TheAtlantic.com ...

The method that we learn in school is a long multiplication method. But this method is very time consuming. SO let’s learn a much faster way to multiply a 2-digit number by 11. Step 1 - Write 3 and 6 ...

Early in my teaching career, which was decades ago, my class was working on 3 digit-by-3 digit multiplication. Yes, back in the day, we only taught the standard algorithm. The school had calculators ...