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QR Challenge: negative numbers

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. 1. I have £25 in my bank. I spend £60. How much do I now have? -35
2. 2. The difference between -16 and -5 is -21. True or False? F it is 11
3. 3. It is 5º C outside. The temperature drops by 11ºC. What is the new temperature? -6
4. 4. Swansea have scored 17 goals. Unfortunately they have let 25 goals in. What is their goal difference?-8
5. 5. -22 + 50= 28
6. 6. Mark is on a diving board 6m above the water. He dives down -6m below water level. How many metres has Mark dived? 12m
7. 7. What is the difference between -29 and 40? 69
8. 8. Tess has -£45 in her bank. Thankfully she gets paid £235. How much money does she now have in her bank? 190
9. 9. I have £125 in my bank. I spend £60 on shoes, £79 on a watch and £50 on some earrings. How much do I now have? £64
10. 10. The difference between -47 and -22 is 25. True or False? T
11. 11. It is -6º C outside. The temperature rises by 11ºC. What is the new temperature? 5
12. 12. Chelsea have scored 54 goals. Unfortunately they have let 75 goals in. What is their goal difference?-21
13. 13. -2 + 50= 48
14. 14. What is the difference between -15 and -22? 7

 


negative numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=1. I-have-£25-in-my-bank.-I-spend-£60.-How-much-do-I-now-have?

Question 1 (of 14)

 


negative numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=2. The-difference-between--16-and--5-is--21.-True-or-False?

Question 2 (of 14)

 


negative numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=3. It-is-5º-C-outside.-The-temperature-drops-by-11ºC.-What-is-the-new-temperature?

Question 3 (of 14)

 


negative numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=4. Swansea-have-scored-17-goals.-Unfortunately-they-have-let-25-goals-in.-What-is-their-goal-difference?

Question 4 (of 14)

 


negative numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=5. -22-+-50=

Question 5 (of 14)

 


negative numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=6. Mark-is-on-a-diving-board-6m-above-the-water.-He-dives-down--6m-below-water-level.-How-many-metres-has-Mark-dived?

Question 6 (of 14)

 


negative numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=7. What-is-the-difference-between--29-and-40?

Question 7 (of 14)

 


negative numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=8. Tess-has--£45-in-her-bank.-Thankfully-she-gets-paid-£235.-How-much-money-does-she-now-have-in-her-bank?

Question 8 (of 14)

 


negative numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=9. I-have-£125-in-my-bank.-I-spend-£60-on-shoes,-£79-on-a-watch-and-£50-on-some-earrings.-How-much-do-I-now-have?

Question 9 (of 14)

 


negative numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=10. The-difference-between--47-and--22-is-25.-True-or-False?

Question 10 (of 14)

 


negative numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=11. It-is--6º-C-outside.-The-temperature-rises-by-11ºC.-What-is-the-new-temperature?

Question 11 (of 14)

 


negative numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=12. Chelsea-have-scored-54-goals.-Unfortunately-they-have-let-75-goals-in.-What-is-their-goal-difference?

Question 12 (of 14)

 


negative numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=13. -2-+-50=

Question 13 (of 14)

 


negative numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=14. What-is-the-difference-between--15-and--22?

Question 14 (of 14)