Build, read, write, and represent three-digit numbers using base-10 blocks and symbols. Build, read, write (in standard and expanded form), and represent three-digit numbers using base-10 blocks and ...

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 ...

Column addition is a way of adding numbers together. It's helpful when you're adding two-digit or three-digit numbers together. When you do column addition, you lay out the numbers you are adding ...

The present paper describes the success, the methods (mental, informal written, standard algorithm) and the strategies of informal written arithmetic to be observed when 300 elementary students worked ...

(dramatic orchestral music) (air swooshes) (magic chimes) (Springling boinging) (Dotsan screaming) - [Kids] Math Mights. - Welcome Math Mights, Mrs. Markovich here, and we've got a whole lot of fun ...

The process of multiplying three numbers together is similar to the process of multiplying two numbers, but it has one extra step. First, you multiply two of the numbers, then you multiply the third ...

Figuring out a word problem. Calculating area and perimeter. Finding the measure of an unknown angle. All these tasks, and more, draw on an essential foundation of math knowledge, said Brian Bushart, ...