QR Foldables | Gr 5 Mathematics | Proportion Story Problems w/ Fractions and Percents This fun activity combines instructional technology, paper crafts, and mathematics. Students create a foldable cube. Each face of the cube has a QR Code that displays a word problem for the student to answer on the accompanying answer sheet. They scan each face of the cube with a QR Code reader of their choice to reveal the problem. Student records the problems on the math story problem strategies templates (included) and then works it out.