So, I can't sleep, and I had a thought - what if my calculator isn't allowed on the Praxis tomorrow? So, I'm searching their website about information about what kind of calculator I can use and I find this page. Note, that I'm taking 0061 Mathematics: Content Knowledge which is listed as a test requiring the use of a graphing calculator. Note also that further down the page there's a section which begins "The following calculator types are not permitted:" and the first item on the list is "programmable." Excuse me? How many graphing calculators aren't programmable? Argh.