HomeHacker News Show HN: Fluxmath: Train your mental math skills with this competitive math game https://ift.tt/3eeu9Ga byDZVOX -5/23/2020 05:42:00 AM 0 Show HN: Fluxmath: Train your mental math skills with this competitive math game https://fluxmath.com May 23, 2020 at 04:54AM Tags: Hacker News Facebook Twitter