khanacademy

Doing 4th grade geometry on @khanacademy w/ my son, barely noticing the chime each time he gets an answer right. He says “that’s such a satisfying sound,” and I think (1) how does he have the wherewithal to make that comment so articulately and (2) the robots are coming for us.

— Makaela Kingsley (@mjkingsley) November 21, 2018