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QR Challenge: Inverse Level 4/5

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. I think of a number, I add 49 and divide by 6. I end up with 17. What is my number? 53
2. 368÷?=46 8
3. 9x?=477 53
4. I think of a number, I add 62 and multiply by 4. I end up with 332. What is my number? 21
5. I think of a number, I minus 73 and multiply by 4. I end up with 736. What is my number? 257
6. ?÷48=16 768
7. 9x?=2943 327
8. I think of a number, I divide it by 5 and add 67. I end up with 116. What is my number? 245

 


Inverse Level 4/5: QR Challenge

https://www.classtools.net/QR/decode.php?text=I_think_of_a_number,_I_add_49_and_divide_by_6._I_end_up_with_17._What_is_my_number?

Question 1 (of 8)

 


Inverse Level 4/5: QR Challenge

https://www.classtools.net/QR/decode.php?text=368÷?=46

Question 2 (of 8)

 


Inverse Level 4/5: QR Challenge

https://www.classtools.net/QR/decode.php?text=9x?=477

Question 3 (of 8)

 


Inverse Level 4/5: QR Challenge

https://www.classtools.net/QR/decode.php?text=I_think_of_a_number,_I_add_62_and_multiply_by_4._I_end_up_with_332._What_is_my_number?

Question 4 (of 8)

 


Inverse Level 4/5: QR Challenge

https://www.classtools.net/QR/decode.php?text=I_think_of_a_number,_I_minus_73_and_multiply_by_4._I_end_up_with_736._What_is_my_number?

Question 5 (of 8)

 


Inverse Level 4/5: QR Challenge

https://www.classtools.net/QR/decode.php?text=?÷48=16

Question 6 (of 8)

 


Inverse Level 4/5: QR Challenge

https://www.classtools.net/QR/decode.php?text=9x?=2943

Question 7 (of 8)

 


Inverse Level 4/5: QR Challenge

https://www.classtools.net/QR/decode.php?text=I_think_of_a_number,_I_divide_it_by_5_and_add_67._I_end_up_with_116._What_is_my_number?

Question 8 (of 8)