Add Yahoo as a preferred source to see more of our stories on Google. This article was originally published in The Hechinger Report. ASTON, Pa.— In Jodie Murphy’s kindergarten class, math lessons go ...

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 ...