In this video, I explain how to perform two-digit operations quickly using mental strategies. We'll cover **addition**, ...

Breaking down the VRA decision into cold, hard House numbers. — Mike Johnson gets a late-night DHS breakthrough. — The ...

Some experts say we are getting dumber by the way. But while we may be heading towards the Age of Stupid, we aren't there - ...

When you are adding larger numbers, it’s often better to use a written method. Column addition is a good written method to add one number to another. It involves putting the digits of each number into ...

It's possible to solve some multiplication problems in your head. But sometimes it can help to use other methods instead. These include using visual aids, such as an array or place counters, or by ...

Many students in elementary grades struggle to grasp the perennially vexing concept of fractions. If those struggles persist ...

Efforts to use the tech to customize lessons to students' individual interest demonstrate its potential—and the shortcomings.

The STIX Two fonts are OpenType fonts and are meant to be used in that format. For the benefit of LaTeX users who are unable to use XeTeX or luaTeX, we have also provided version 2.0.0 of the STIX ...