unironically get a permission form from the parents to get the kid to play certain video games that are very math heavy. they can teach basic math skills very easy. then have them do assignments similar to in CS or math but make it about the game. :shrug-outta-hecks:

i have a cousin that i did this with. ultimately requires initiative on the part of the kid but positioning it in a way that seems fun and out of the ordinary is the way to go imo. math education in the USA sucks dick