EQUALINE on SteamEQUALINE is a "one-stroke calculation puzzle" where you have to connect numbers and symbols with lines to complete a calculation. There is only one correct answer for each combination of nine squares, and the target number increases with each puzzle. It's a highly competitive action puzzle game.
算数、数学の宿題を爆速で終わらせる「Microsoft Mathematics」を紹介する - しがない学生の雑記
