As they often do to kick off the school year, Texas Instruments is doing a back-to-school contest with some very cool prizes on the line. From now through Sept 25, they’re giving away TI graphing calculators each week to a couple of lucky winners. Additionally, the grand prize is $500 and trip for two to Dallas to Texas Instruments’ HQ. To enter, visit the contest website where you can enter by taking a quiz about your STEM style quiz. You can also enter by posting a picture of how you’re into STEM (Science, Technology, Engineering, and Math) and posting it to Twitter or Instagram with the hashtag #GenSTEMcontest. As an added cool factor, former NFL center John Urschel and MIT PhD candidate in mathematics is helping to select the winners.