QR Challenge: Expanded Form--Math
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. 1. 214 | 200+10+4
|
2. 2. 356 | 300+50+6
| 3. 3. 487 | 400+80+7
| 4. 4. 555 | 500+50+5
| 5. 5. 604 | 600+0+4
| 6. 6. 790 | 700+90+0
| 7. 7. 823 | 800+20+3
| 8. 8. 987 | 900+80+7
| 9. 9. 65 | 60+5
| 10. 10. 123 | 100+20+3
| 11. 11. 700+50+1 | 751
| 12. 12. 900+0+7 | 907
| 13. 13. 500+10+0 | 510
| 14. 14. 100+60+8 | 168
| 15. 15. 400+20+2 | 422
| 16. 16. 900+0+9 | 909
| 17. 17. 300+30+3 | 333
| 18. 18. 800+0+1 | 801
| 19. 19. 600+30+9 | 639
| 20. 20. 200+50+0 | 250 |
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=1.__214
Question 1 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=2.__356
Question 2 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=3.__487
Question 3 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=4.__555
Question 4 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=5.__604
Question 5 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=6.__790
Question 6 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=7.__823
Question 7 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=8.__987
Question 8 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=9.__65
Question 9 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=10.__123
Question 10 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=11.__700+50+1
Question 11 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=12.__900+0+7
Question 12 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=13.__500+10+0
Question 13 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=14.__100+60+8
Question 14 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=15.__400+20+2
Question 15 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=16.__900+0+9
Question 16 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=17.__300+30+3
Question 17 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=18.__800+0+1
Question 18 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=19.__600+30+9
Question 19 (of 20)
Expanded Form--Math: QR Challenge
https://www.classtools.net/QR/decode.php?text=20.__200+50+0
Question 20 (of 20)