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 ...

Two students in Danielle Adler’s kindergarten class at Marcus Hook Elementary School in Marcus Hook, Pa., prepare for an addition problem. Credit: Holly Korbey for The Hechinger Report The Hechinger ...

Dyscalculia is a severe and persistent learning disability in math that affects about 5 to 8 percent of school-age children. Due to its impact on students’ ability to learn and retain basic math facts ...