QR Challenge: Algebra missing numbers
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. 26+?=39 | 13
|
2. ?/10=24 | 240
| 3. 17+?=52 | 35
| 4. ?/6=6 | 36
| 5. 7x?=28 | 4
| 6. 44-?=18 | 26
| 7. 9x?=45 | 5
| 8. 52-?=27 | 25
| 9. 32/?=8 | 4
| 10. 15=?-30 | 45
| 11. ?/9=7 | 63
| 12. 7=?/6 | 42
| 13. 16201/?=17 | 953
| 14. ?/12=813 | 9756
| 15. ?x11=6611 | 601
| 16. ?/15=584 | 8760
| 17. 327+?=506 | 179
| 18. 842-?=158 | 684
| 19. ?-246=379 | 625
| 20. 437+?=1200 | 763
| 21. 34x?=306 | 9
| 22. ?/8=76 | 608
| 23. ?x54=324 | 6
| 24. 47.3+?=71.4 | 24.1
| 25. 69.02-?=34.75 | 34.27 |
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=26+?=39
Question 1 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=?/10=24
Question 2 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=17+?=52
Question 3 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=?/6=6
Question 4 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=7x?=28
Question 5 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=44-?=18
Question 6 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=9x?=45
Question 7 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=52-?=27
Question 8 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=32/?=8
Question 9 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=15=?-30
Question 10 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=?/9=7
Question 11 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=7=?/6
Question 12 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=16201/?=17
Question 13 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=?/12=813
Question 14 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=?x11=6611
Question 15 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=?/15=584
Question 16 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=327+?=506
Question 17 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=842-?=158
Question 18 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=?-246=379
Question 19 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=437+?=1200
Question 20 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=34x?=306
Question 21 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=?/8=76
Question 22 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=?x54=324
Question 23 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=47.3+?=71.4
Question 24 (of 25)
Algebra missing numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=69.02-?=34.75
Question 25 (of 25)