QR Challenge: how many slices of pizza did I order?
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. Emily ate 1/8 of the pizza and Josh ate 3/4 of the pizza, how many slices did each student eat? | 1 and 6
|
2.
| | 3. how many slices are left to eat, after Emily and Josh eat their parts? | 1
| 4.
| | 5. Brianna ate 1/3 of a pizza, Matt ate 1/4 of the same pizza. How many slices were left for Mrs. Absten? | 1
| 6.
| | 7. Grace used 7/9 of the sugar that was in the bowl, Dakota used 1/5 of it, how many cups of sugar were in the bowl? | 45
| 8.
| | 9. How many cups did Grace use? | 35
| 10.
| | 11. How many cups did Dakota use? | 9
| 12.
| | 13. Mercedes used 11/12 of the flour in her cake, what percent did she use? | 92%
| 14.
| | 15. Katie cuts 5/16 inch off the top of a photo and 3/8 inch off the bottom. How much smaller is the total height of the photo now? | 11/16
| 16. If Kierra got 35% or 21 problems correct on her test, how many problems were on the test? | 60
| 17. Kierra's question is a bonus question, If you already answered it, you may not check it until the very end. | :) |
how many slices of pizza did I order?: QR Challenge
https://www.classtools.net/QR/decode.php?text=Emily-ate-1/8-of-the-pizza-and-Josh-ate-3/4-of-the-pizza,-how-many-slices-did-each-student-eat?
Question 1 (of 17)
how many slices of pizza did I order?: QR Challenge
https://www.classtools.net/QR/decode.php?text=
Question 2 (of 17)
how many slices of pizza did I order?: QR Challenge
https://www.classtools.net/QR/decode.php?text=how-many-slices-are-left-to-eat,-after-Emily-and-Josh-eat-their-parts?
Question 3 (of 17)
how many slices of pizza did I order?: QR Challenge
https://www.classtools.net/QR/decode.php?text=
Question 4 (of 17)
how many slices of pizza did I order?: QR Challenge
https://www.classtools.net/QR/decode.php?text=Brianna-ate-1/3-of-a-pizza,-Matt-ate-1/4-of-the-same-pizza.-How-many-slices-were-left-for-Mrs.-Absten?
Question 5 (of 17)
how many slices of pizza did I order?: QR Challenge
https://www.classtools.net/QR/decode.php?text=
Question 6 (of 17)
how many slices of pizza did I order?: QR Challenge
https://www.classtools.net/QR/decode.php?text=Grace-used-7/9-of-the-sugar-that-was-in-the-bowl,-Dakota-used-1/5-of-it,-how-many-cups-of-sugar-were-in-the-bowl?
Question 7 (of 17)
how many slices of pizza did I order?: QR Challenge
https://www.classtools.net/QR/decode.php?text=
Question 8 (of 17)
how many slices of pizza did I order?: QR Challenge
https://www.classtools.net/QR/decode.php?text=How-many-cups-did-Grace-use?
Question 9 (of 17)
how many slices of pizza did I order?: QR Challenge
https://www.classtools.net/QR/decode.php?text=
Question 10 (of 17)
how many slices of pizza did I order?: QR Challenge
https://www.classtools.net/QR/decode.php?text=How-many-cups-did-Dakota-use?
Question 11 (of 17)
how many slices of pizza did I order?: QR Challenge
https://www.classtools.net/QR/decode.php?text=
Question 12 (of 17)
how many slices of pizza did I order?: QR Challenge
https://www.classtools.net/QR/decode.php?text=Mercedes-used-11/12-of-the-flour-in-her-cake,-what-percent-did-she-use?
Question 13 (of 17)
how many slices of pizza did I order?: QR Challenge
https://www.classtools.net/QR/decode.php?text=
Question 14 (of 17)
how many slices of pizza did I order?: QR Challenge
https://www.classtools.net/QR/decode.php?text=Katie-cuts-5/16-inch-off-the-top-of-a-photo-and-3/8-inch-off-the-bottom.-How-much-smaller-is-the-total-height-of-the-photo-now?
Question 15 (of 17)
how many slices of pizza did I order?: QR Challenge
https://www.classtools.net/QR/decode.php?text=If-Kierra-got-35%-or-21-problems-correct-on-her-test,-how-many-problems-were-on-the-test?
Question 16 (of 17)
how many slices of pizza did I order?: QR Challenge
https://www.classtools.net/QR/decode.php?text=Kierra's-question-is-a-bonus-question,-If-you-already-answered-it,-you-may-not-check-it-until-the-very-end.
Question 17 (of 17)
