QR Challenge: World War 2 - Code Breaking
Teacher Notes
A. Prior to the lesson:
1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.
2. If their phone camera doesn't automatically detect and decode QR codes, ask students to
- Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
- Bring these devices into the lesson.
3. Print out the QR codes.
4. Cut them out and place them around your class / school.
B. The lesson:
1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.
2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.
3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!
C. TIPS / OTHER IDEAS
4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.
Questions / Answers (teacher reference)
Question | Answer |
1. 9² | 81
|
2. 3x20+4x3 | 72
| 3. 5²x4+10%of 50 | 105
| 4. 10%of240 | 24
| 5. 8x11 | 88
| 6. 6²x10 | 360
| 7. √81 | 9
| 8. 10x5x7 | 550
| 9. 4² | 16
| 10. 90%of70 | 63
| 11. 9² | 81
| 12. 6+5x4 | 36
| 13. 1.2x100 | 120
| 14. 15%of300 | 45
| 15. √64 | 8
| 16. The first prime number | 2
| 17. 1.5x10 | 15
| 18. √36 | 6
| 19. √36-5 | 1
| 20. 5²-15 | 10
| 21. 12x12x2-44 | 240
| 22. ½ of 2³ | 4
| 23. √9 | 3
| 24. √49 | 7
| 25. 5x6+3x4 | 42
| 26. √36-1 | 5 |
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=9²
Question 1 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=3x20+4x3
Question 2 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=5²x4+10%of_50
Question 3 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=10%of240
Question 4 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=8x11
Question 5 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=6²x10
Question 6 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=√81
Question 7 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=10x5x7
Question 8 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=4²
Question 9 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=90%of70
Question 10 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=9²
Question 11 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=6+5x4
Question 12 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=1.2x100
Question 13 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=15%of300
Question 14 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=√64
Question 15 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=The_first_prime_number
Question 16 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=1.5x10
Question 17 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=√36
Question 18 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=√36-5
Question 19 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=5²-15
Question 20 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=12x12x2-44
Question 21 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=½_of_2³
Question 22 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=√9
Question 23 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=√49
Question 24 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=5x6+3x4
Question 25 (of 26)
World War 2 - Code Breaking: QR Challenge
https://www.classtools.net/QR/decode.php?text=√36-1
Question 26 (of 26)