QR Challenge: Multiplying and dividing fractions
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. 4/5 + 8/10 | 16/10
|
2. 4/6 + 6/8 | 34/24
| 3. 1 and 1/5 x 2 | 2 and 2/5
| 4. 7 x 3 and 1/2 | 24 and 1/2
| 5. 11/15 x 7 | 5 and 2/15
| 6. 2 and 2/5 x 3 | 7 and 1/5
| 7. 4/20 divided by 4 | 1/20
| 8. 24/25 divided by 6 | 4/25
| 9. 6/8 divided by ? =1/4 | 3
| 10. 24/20 divided by ? = 1/20 | 24
| 11. ? =19/20 divided by 5 | 19/100
| 12. 1/3 divided by 3 | 1/9
| 13. 3/4 of a kilogram of rice is divided equally between 2 bowls. How much is in each bowl? | 3/8 kg
| 14. 4/5 divided by 2 | 2/5
| 15. 1/5 divided by 7 | 1/35 |
Multiplying and dividing fractions: QR Challenge
https://www.classtools.net/QR/decode.php?text=4/5_+_8/10
Question 1 (of 15)
Multiplying and dividing fractions: QR Challenge
https://www.classtools.net/QR/decode.php?text=4/6_+_6/8
Question 2 (of 15)
Multiplying and dividing fractions: QR Challenge
https://www.classtools.net/QR/decode.php?text=1_and_1/5_x_2
Question 3 (of 15)
Multiplying and dividing fractions: QR Challenge
https://www.classtools.net/QR/decode.php?text=7_x_3_and_1/2
Question 4 (of 15)
Multiplying and dividing fractions: QR Challenge
https://www.classtools.net/QR/decode.php?text=11/15_x_7
Question 5 (of 15)
Multiplying and dividing fractions: QR Challenge
https://www.classtools.net/QR/decode.php?text=2_and_2/5_x_3
Question 6 (of 15)
Multiplying and dividing fractions: QR Challenge
https://www.classtools.net/QR/decode.php?text=4/20_divided_by_4
Question 7 (of 15)
Multiplying and dividing fractions: QR Challenge
https://www.classtools.net/QR/decode.php?text=24/25_divided_by_6
Question 8 (of 15)
Multiplying and dividing fractions: QR Challenge
https://www.classtools.net/QR/decode.php?text=6/8_divided_by_?_=1/4
Question 9 (of 15)
Multiplying and dividing fractions: QR Challenge
https://www.classtools.net/QR/decode.php?text=24/20_divided_by_?_=_1/20
Question 10 (of 15)
Multiplying and dividing fractions: QR Challenge
https://www.classtools.net/QR/decode.php?text=?_=19/20_divided_by_5
Question 11 (of 15)
Multiplying and dividing fractions: QR Challenge
https://www.classtools.net/QR/decode.php?text=1/3_divided_by_3
Question 12 (of 15)
Multiplying and dividing fractions: QR Challenge
https://www.classtools.net/QR/decode.php?text=3/4_of_a_kilogram_of_rice_is_divided_equally_between_2_bowls._How_much_is_in_each_bowl?
Question 13 (of 15)
Multiplying and dividing fractions: QR Challenge
https://www.classtools.net/QR/decode.php?text=4/5_divided_by_2
Question 14 (of 15)
Multiplying and dividing fractions: QR Challenge
https://www.classtools.net/QR/decode.php?text=1/5_divided_by_7
Question 15 (of 15)