The common-core math standards require that students learn the standard algorithm for multi-digit adding and subtracting—you know, the process in which you line the numbers up vertically to add or ...

On a breezy July morning in South Seattle, a dozen elementary-aged students ran math relays behind an elementary school. One by one, they raced to a table, where they scribbled answers to ...

Decompose numbers to subtract. Engage in a Number Talk focused on subtraction strategies. Decompose numbers to subtract. Engage in a Number Talk focused on subtraction strategies. Can you solve the ...

Dr Reyaz Ahmad                  Math fluency is no longer just about speed in mental calculations or rote memorisation of ...