Pair or group no more than 3 students and give 2 iPads to each group. Students will use the iPad and QR Reader app to scan each code. They are to write down their answers on a separate sheet of paper.
You have two choices in how to print the QR Codes. One is the card format and the other is in the form of a cube.
An extension of this activity would be to allow students to use the Internet for questions they don't know the answer to and sharpen their KEYWORD skills to find the answer. Students are to work through all 4 sets of questions.