QR Challenge: Multiplying Decimals by Decimals
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. 18.86 | 8.2 x 2.3
|
2. 49.41 | 6.1 x 8.1
| 3. 13.35 | 8.9 x 1.5
| 4. 18.91 | 6.1 x 3.1
| 5. 49.50 | 5.5 x 9.0
| 6. 30.09 | 5.9 x 5.1
| 7. 19.25 | 7.7 x 2.5
| 8. 48.45 | 8.5 x 5.7
| 9. 1.43 | 1.1 x 1.3
| 10. 20.68 | 2.2 x 9.4
| 11. 25.90 | 3.5 x 7.4
| 12. 48.30 | 7.0 x 6.9
| 13. 77.90 | 8.2 x 9.5
| 14. 51.00 | 8.5 x 6.0
| 15. 8.82 | 1.8 x 4.9
| 16. 39.16 | 8.9 x 4.4
| 17. 21.08 | 3.1 x 6.8
| 18. 9.45 | 4.5 x 2.1
| 19. 4.50 | 4.5 x 1.0
| 20. 93.10 | 9.8 x 9.5 |
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q1/20:
18.86&choe=UTF-8
Question 1 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q2/20:
49.41&choe=UTF-8
Question 2 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q3/20:
13.35&choe=UTF-8
Question 3 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q4/20:
18.91&choe=UTF-8
Question 4 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q5/20:
49.50&choe=UTF-8
Question 5 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q6/20:
30.09&choe=UTF-8
Question 6 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q7/20:
19.25&choe=UTF-8
Question 7 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q8/20:
48.45&choe=UTF-8
Question 8 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q9/20:
1.43&choe=UTF-8
Question 9 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q10/20:
20.68&choe=UTF-8
Question 10 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q11/20:
25.90&choe=UTF-8
Question 11 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q12/20:
48.30&choe=UTF-8
Question 12 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q13/20:
77.90&choe=UTF-8
Question 13 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q14/20:
51.00&choe=UTF-8
Question 14 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q15/20:
8.82&choe=UTF-8
Question 15 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q16/20:
39.16&choe=UTF-8
Question 16 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q17/20:
21.08&choe=UTF-8
Question 17 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q18/20:
9.45&choe=UTF-8
Question 18 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q19/20:
4.50&choe=UTF-8
Question 19 (of 20)
Multiplying Decimals by Decimals : QR Challenge
https://www.classtools.net/QR/decode.php?text=Multiplying Decimals by Decimals
Q20/20:
93.10&choe=UTF-8
Question 20 (of 20)