Nice! I feel like some of these questions are going to be beyond grades 1 and 2 in many cases. Maybe you could have a difficulty setting that kids could work

Nice! I feel like some of these questions are going to be beyond grades 1 and 2 in many cases. Maybe you could have a difficulty setting that kids could work through? Or let the user choose to say, only do addition with a ceiling on the numbers to use? Lots of options here, I think. Also, I'd be inclined to make the timer settable and maybe have the option to remove it. If my kids are working on math problems, I'm more concerned with them getting to the right answer than with how long it takes them to get there. The pressure of the clock may force them to answer before they're confident in the correct response. I will pat myself on the back for being able to answer the question which proves I am an adult.