In 1960, a 23-year-old Soviet mathematician named Anatoly Karatsuba stunned the world of mathematics with a revolutionary discovery: a faster way to multiply large numbers. Known today as Karatsuba’s ...

Well, Barry Garelick, a veteran 7th and 8th grade math teacher, sent me a thoughtful note on the exchange. Garelick is the ...

This study analyzed children's use of mental computation strategies and the standard algorithm on multi-digit subtractions. Fifty-eight Flemish 4th graders of varying mathematical achievement level ...