QR Challenge: Chapter 3 Test for Math 7
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. Which integer represents 8°C below 0? | -8
|
2. What is the value of | 3 |? | 3
| 3. What is the value of | –9 |? | 9
| 4. What is the value of 3 – 14? | -11
| 5. A turtle dives towards deeper water at a rate of 8 inches per second. It continues for a total of 16 seconds. Which expression represents this situation? | 16(-8)
| 6. Marisa has $26 in her purse. She pays $5 for lunch. Which expression represents this situation? | 26+(-5)
| 7. Aaron turned on his air conditioning and the temperature in his apartment decreased 6 degrees. Write an integer to represent the change in temperature. | -6°
| 8. Luisa is 43 feet underground touring a cavern. She climbs a ladder up 14 feet. What is her new location? | -29 feet
| 9. The highest point in California is Mount Whitney at 14,494 feet above sea level. The lowest point in California is in Death Valley at 282 feet below sea level. What is the difference in elevations? | 14,776 feet
| 10. canyon, then climbs up 12 feet. Which value represents her final position? | -8 ft
| 11. 8 + (–7) | 1
| 12. –7(–6) | 42
| 13. 18 ÷ (–9) | -2
| 14. 35 – 12 | 23
| 15. (–3)2 | -6
| 16. and c = –1? bc | -6
| 17. and c = –1? 10 – a | 14
| 18. and c = –1? 9 + b | 15
| 19. and c = –1? (-12)÷b | -2 |
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=Which_integer_represents_8°C_below_0?
Question 1 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=What_is_the_value_of_|_3_|?
Question 2 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=What_is_the_value_of_|_–9_|?
Question 3 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=What_is_the_value_of_3_–_14?
Question 4 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=A_turtle_dives_towards_deeper_water_at_a_rate_of_8_inches_per_second._It_continues_for_a_total_of_16_seconds._Which_expression_represents_this_situation?
Question 5 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=Marisa_has_$26_in_her_purse._She_pays_$5_for_lunch._Which_expression_represents_this_situation?
Question 6 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=Aaron_turned_on_his_air_conditioning_and_the_temperature_in_his_apartment_decreased_6_degrees._Write_an_integer_to_represent_the_change_in_temperature.
Question 7 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=Luisa_is_43_feet_underground_touring_a_cavern._She_climbs_a_ladder_up_14_feet._What_is_her_new_location?
Question 8 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=The_highest_point_in_California_is_Mount_Whitney_at_14,494_feet_above_sea_level._The_lowest_point_in_California_is_in_Death_Valley_at_282_feet_below_sea_level._What_is_the_difference_in_elevations?
Question 9 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=canyon,_then_climbs_up_12_feet._Which_value_represents_her_final_position?
Question 10 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=8_+_(–7)
Question 11 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=–7(–6)
Question 12 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=18_÷_(–9)
Question 13 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=35_–_12
Question 14 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=(–3)2
Question 15 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=and_c_=_–1?_bc
Question 16 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=and_c_=_–1?_10_–_a
Question 17 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=and_c_=_–1?_9_+_b
Question 18 (of 19)
Chapter 3 Test for Math 7: QR Challenge
https://www.classtools.net/QR/decode.php?text=and_c_=_–1?_(-12)÷b
Question 19 (of 19)
