The Duolingo math app will cover basic third and fourth grade level mathematics, including multiplication, division, fractions, angles, and area measurements. A Duolingo language lesson looks more ...

I taught sixth-grade math for 24 years and found that the biggest impediment to teaching at that level was that so many ...

To solve basic math operations — and more complicated ones down the road — kids need problem-solving skills and number sense. Number sense is the ability to understand what numbers mean, how they ...

There's a fundamental math skill that many Americans never learn, leading to many negative repercussions later in life, according to new research. It's called number system knowledge and refers to the ...