* Subscribe to Beast Academy, and do the interesting problems (puzzle and challenge ones). Cost is $15/month, and you should be able to do this fast, so it shou

* Subscribe to Beast Academy, and do the interesting problems (puzzle and challenge ones). Cost is $15/month, and you should be able to do this fast, so it shouldn't be too high * Sign up for Alcumus. This is free. Set it to easy. Try problems in each section, and use this to identify gaps. If you find a gap, do a deep dive to address it. If you can't solve a problem independently, solve it using online resources (but put in the wrong answer / give up -- you don't want the ITS thinking you could do it). * Watch videos on 3B1B, and sign up for Brilliant. Take a few courses. * This will sound silly, but do sinerider, nandgame, and the fun Khan Academy courses (Advanced JavaScript and Pixar-in-a-Box), and things like this. Math is broad, and those give helpful exposure to a broader range of topics. https://www.youtube.com/channel/UCYO_jab_esuFRV4b17AJtAw https://www.youtube.com/channel/UCYO_jab_esuFRV4b17AJtAw https://artofproblemsolving.com/alcumus/ https://artofproblemsolving.com/alcumus/