# Print

## 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

• Bring these devices into the lesson.

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.

### Question

1. 1. C (Either use your answers to guess/check or graph and look at table)
2. 2. B (1/3 times -3 = -1 so x moves to the denominator)
3. 3. D (Change in y over change in x)
4. 4. C (Stat edit or complete the chart to x = 0 y = 5.5)
5. 5. B (Watch those signs - Company y-Company z)
6. 6. B Distance formula 3 times
7. 7. D (Multiplying Pattern = Exponential)
8. 8. D (Remember 1000ths move the decimal over 3 times)
9. 9. A (Draw a picture - find midpoint and sketch perpendicular line)
10. 10. B Treat decimals as percents and times by 3500
11. 11. D (Multiply each decimal by the number of people interviewed to get actual numbers)
12. 12. C (Remember slope is change in y/change in x)
13. 13. B (Use the formula and combine like terms)
14. 14. D (It has to be in sets of 2 nickels because it is = to \$.65 which you can't get in dimes)
15. 15. A Make sure you do at least 70 pencils and fill in the rest with pens since they make more profit
16. 16. C (Set equal to each other and solve)
17. 17. A (Looks weird but stick in 1 topping and check price)

### HW 1-17: QR Challenge

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