Mrs. Post and her daughter, Hallie, teach us a great way to look at multiplication: by adding groups of numbers. Rise and Shine is available to stream on pbs.org and the free PBS App, available on ...

To do the method, begin by writing the two numbers you want to multiply at the top of two columns. In the left column, you ...

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Most people know just one way to multiply two large numbers by hand. Typically, they learned it in elementary school. They’re often surprised to find that there are a variety of ways to do ...

Lynda Colgan receives funding from The Ministry of Education for the Province of Ontario and The Mathematics Knowledge Network (KNAER). Queen's University, Ontario provides funding as a founding ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...