Spelling Cards

I will be presenting how to incorporate QR codes into literacy at a convention in February and although I have used them for many things in the past I am always trying to come up with new ideas.  This time I am using the QR code as a way for students to check their work when trying to sound out words.  I have made about 24 cards.  Each card has a picture of something, lines for the number of letters in that word, and a QR code that when scanned shows the correct way to spell the word.  I laminated the cards so the students can use dry erase markers on them.  The idea is that students try sounding out the word that goes with the picture, writes it on the lines, and then scans the QR code to check their spelling.