QR Challenge: Math Integers
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. Is 6 (-3) the same as -6 3? Explain. | Yes, because a negative divided by a positive is the same as a positive divided by a negative.
|
2. 7 - (-3) + (-2) - 4 = | 4
| 3. 56 ÷ (-14) = | -4
| 4. 11 + (-2) = | 9
| 5. Some number added to 5 is equal to -11. Find the number. | -16
| 6. (−8) − (−6) | -2
| 7. 2 − (−2) | 4
| 8. (−1) − (−40) | 39
| 9. -56/8 | -7
| 10. -5+19 | 14
| 11. -8(14) | -112
| 12. -29+78 | 49
| 13. If you multiply a positive by a negative, your answer will be ??? | negative
| 14. When you divide two integers with same signs, the result is always ?? | negative
| 15. When adding integers and the signs are the same, you should add or subtract the numbers? | add
| 16. When adding integers with different signs, you should add or subtract the numbers? | subtract
| 17. the temperature at noon? | -14
| 18. did it drop? | 28 |
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Is_6__(-3)_the_same_as_-6__3?_Explain.
Question 1 (of 18)
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=7_-__(-3)__+__(-2)_-_4_=
Question 2 (of 18)
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=56__÷__(-14)_=
Question 3 (of 18)
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=11__+__(-2)_=
Question 4 (of 18)
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Some_number_added_to_5_is_equal_to_-11._Find_the_number.
Question 5 (of 18)
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=(−8)_−_(−6)
Question 6 (of 18)
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=2_−_(−2)
Question 7 (of 18)
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=(−1)_−_(−40)
Question 8 (of 18)
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=-56/8
Question 9 (of 18)
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=-5+19
Question 10 (of 18)
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=-8(14)
Question 11 (of 18)
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=-29+78
Question 12 (of 18)
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=If_you_multiply_a_positive_by_a_negative,_your_answer_will_be_???
Question 13 (of 18)
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=When_you_divide_two_integers_with_same_signs,_the_result_is_always_??
Question 14 (of 18)
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=When_adding_integers_and_the_signs_are_the_same,_you_should_add_or_subtract_the_numbers?
Question 15 (of 18)
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=When_adding_integers_with_different_signs,_you_should_add_or_subtract_the_numbers?
Question 16 (of 18)
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=the_temperature_at_noon?
Question 17 (of 18)
Math Integers: QR Challenge
https://www.classtools.net/QR/decode.php?text=did_it_drop?
Question 18 (of 18)
