QR Challenge: Inequalities Enrichment QR Activity
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. #1) 2x + 4 ≥ 24 | x ≥ 10
|
2. #2) -3(x + 1) ≤ -18 | x ≥ 5
| 3. #3) -x - 2 < 8 | x > -10
| 4. #4) -7x + 7 ≤ -56 | x ≥ 9
| 5. #5) -4(-4 + x) > 56 | x <-10
| 6. #6) -4(3 + x) < -32 | x > 5
| 7. #7) -4x - 5 > -25 | x < 5
| 8. #8) 84 ≥ -7(x - 9) | x ≥ -3
| 9. #9) -5x + 2x > 3 | x < -1
| 10. #10) 5x + 4x ≤ 18 | x ≤ 2
| 11. #11)5(6 + 3x) + 7 ≥ 127 | x ≥ 6
| 12. #12) -8x + 2x - 16 < -5x + 7x | x > -2
| 13. #13) -4 + 4x - 4x - 20 ≤ -24 | All Real Numbers
| 14. #14) -5x - 6x ≤ 8 - 8x - 1x | x ≥ -4
| 15. #15) x + x + x + 2x + x - x + 1 + 1 < 14 | x < 1 |
Inequalities Enrichment QR Activity: QR Challenge
https://www.classtools.net/QR/decode.php?text=Inequalities Enrichment QR Activity
Q1/15:
#1) 2x + 4 ≥ 24&choe=UTF-8
Question 1 (of 15)
Inequalities Enrichment QR Activity: QR Challenge
https://www.classtools.net/QR/decode.php?text=Inequalities Enrichment QR Activity
Q2/15:
#2) -3(x + 1) ≤ -18&choe=UTF-8
Question 2 (of 15)
Inequalities Enrichment QR Activity: QR Challenge
https://www.classtools.net/QR/decode.php?text=Inequalities Enrichment QR Activity
Q3/15:
#3) -x - 2 < 8&choe=UTF-8
Question 3 (of 15)
Inequalities Enrichment QR Activity: QR Challenge
https://www.classtools.net/QR/decode.php?text=Inequalities Enrichment QR Activity
Q4/15:
#4) -7x + 7 ≤ -56&choe=UTF-8
Question 4 (of 15)
Inequalities Enrichment QR Activity: QR Challenge
https://www.classtools.net/QR/decode.php?text=Inequalities Enrichment QR Activity
Q5/15:
#5) -4(-4 + x) > 56&choe=UTF-8
Question 5 (of 15)
Inequalities Enrichment QR Activity: QR Challenge
https://www.classtools.net/QR/decode.php?text=Inequalities Enrichment QR Activity
Q6/15:
#6) -4(3 + x) < -32&choe=UTF-8
Question 6 (of 15)
Inequalities Enrichment QR Activity: QR Challenge
https://www.classtools.net/QR/decode.php?text=Inequalities Enrichment QR Activity
Q7/15:
#7) -4x - 5 > -25&choe=UTF-8
Question 7 (of 15)
Inequalities Enrichment QR Activity: QR Challenge
https://www.classtools.net/QR/decode.php?text=Inequalities Enrichment QR Activity
Q8/15:
#8) 84 ≥ -7(x - 9)&choe=UTF-8
Question 8 (of 15)
Inequalities Enrichment QR Activity: QR Challenge
https://www.classtools.net/QR/decode.php?text=Inequalities Enrichment QR Activity
Q9/15:
#9) -5x + 2x > 3&choe=UTF-8
Question 9 (of 15)
Inequalities Enrichment QR Activity: QR Challenge
https://www.classtools.net/QR/decode.php?text=Inequalities Enrichment QR Activity
Q10/15:
#10) 5x + 4x ≤ 18 &choe=UTF-8
Question 10 (of 15)
Inequalities Enrichment QR Activity: QR Challenge
https://www.classtools.net/QR/decode.php?text=Inequalities Enrichment QR Activity
Q11/15:
#11)5(6 + 3x) + 7 ≥ 127 &choe=UTF-8
Question 11 (of 15)
Inequalities Enrichment QR Activity: QR Challenge
https://www.classtools.net/QR/decode.php?text=Inequalities Enrichment QR Activity
Q12/15:
#12) -8x + 2x - 16 < -5x + 7x&choe=UTF-8
Question 12 (of 15)
Inequalities Enrichment QR Activity: QR Challenge
https://www.classtools.net/QR/decode.php?text=Inequalities Enrichment QR Activity
Q13/15:
#13) -4 + 4x - 4x - 20 ≤ -24&choe=UTF-8
Question 13 (of 15)
Inequalities Enrichment QR Activity: QR Challenge
https://www.classtools.net/QR/decode.php?text=Inequalities Enrichment QR Activity
Q14/15:
#14) -5x - 6x ≤ 8 - 8x - 1x&choe=UTF-8
Question 14 (of 15)
Inequalities Enrichment QR Activity: QR Challenge
https://www.classtools.net/QR/decode.php?text=Inequalities Enrichment QR Activity
Q15/15:
#15) x + x + x + 2x + x - x + 1 + 1 < 14&choe=UTF-8
Question 15 (of 15)
