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QR Challenge: Ratios and Proportions

Created using the ClassTools QR Treasure Hunt Generator

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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

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. 5 is to 12 as x is to 48. 20
2. w is to 9 as 7 is to 36. 7/4
3. d is to 4 as 32 is to 56. 16/7
4. 22 is to 50 as x is to 500. 220
5. 10 is to 45 as b is to 225. 50
6. n is to 18 as 64 is to 72. 16
7. You work in the local mailroom at a college. One of your duties is to sort local mail from all of the other mail. You can sort 8 pieces of mail in 10 seconds. How many pieces of mail should you be able to sort in 45 minutes? 2160
8. A music downloading webstie reports that nearly 5 out of every 7 songs downloaded are classified as pop music. According to this information, predict how many of the next 500 songs downloaded will be pop songs. Round your answer to the nearest whole number. about 357 songs

 


Ratios and Proportions: QR Challenge

https://www.classtools.net/QR/decode.php?text=5-is-to-12-as-x-is-to-48.

Question 1 (of 8)

 


Ratios and Proportions: QR Challenge

https://www.classtools.net/QR/decode.php?text=w-is-to-9-as-7-is-to-36.

Question 2 (of 8)

 


Ratios and Proportions: QR Challenge

https://www.classtools.net/QR/decode.php?text=d-is-to-4-as-32-is-to-56.

Question 3 (of 8)

 


Ratios and Proportions: QR Challenge

https://www.classtools.net/QR/decode.php?text=22-is-to-50-as-x-is-to-500.

Question 4 (of 8)

 


Ratios and Proportions: QR Challenge

https://www.classtools.net/QR/decode.php?text=10-is-to-45-as-b-is-to-225.

Question 5 (of 8)

 


Ratios and Proportions: QR Challenge

https://www.classtools.net/QR/decode.php?text=n-is-to-18-as-64-is-to-72.

Question 6 (of 8)

 


Ratios and Proportions: QR Challenge

https://www.classtools.net/QR/decode.php?text=You-work-in-the-local-mailroom-at-a-college.-One-of-your-duties-is-to-sort-local-mail-from-all-of-the-other-mail.-You-can-sort-8-pieces-of-mail-in-10-seconds.-How-many-pieces-of-mail-should-you-be-able-to-sort-in-45-minutes?

Question 7 (of 8)

 


Ratios and Proportions: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-music-downloading-webstie-reports-that-nearly-5-out-of-every-7-songs-downloaded-are-classified-as-pop-music.-According-to-this-information,-predict-how-many-of-the-next-500-songs-downloaded-will-be-pop-songs.-Round-your-answer-to-the-nearest-whole-number.

Question 8 (of 8)