If you entered a valid grid diagram, it'll take several seconds to generate a Mondrian artwork of the grid diagram and then quit the programme. Otherwise it'll quit the programme without doing ...

And by encouraging students to bite off the “easy” bits of a math problem first, it seems to me they could also help build confidence for students who are easily intimidated by math.

Write the number in a grid of boxes like the one shown in Diagram B, in alternating fashion. For example, if your card number is 3141592653589793, then your numbers would be 34525599 and 11963873.