For Aleksey Kazakevich, chess has long been second nature. He has spent nearly two decades teaching the game, delivering thousands of private lessons along the way. As a volunteer and head instructor ...

Some parents are signing their children up for chess lessons to get a break, and to teach them how to express themselves. By Lam Thuy Vo Ellis Clifton draws a grid with yellow chalk, counting each row ...

Anyone who’s taken language lessons on the Duolingo app is certainly familiar with the Duolingo owl, Duo. If you skip out on lessons, Duo will ping you — crying! — to come back. Over the past few ...