QR Challenge: Grade 8 Math

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

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. Candice had $20 in her wallet. In the morning, she borrowed $15 from her friend, then she paid $8 for lunch and $4 for a new notebook. Finally, when she went home she received her $10 allowance. How much money does Candice have altogether?	$33
2.
3. Last Monday, Suneel had $283 in her bank account. On Tuesday, Suneel withdrew $120 in cash, and wrote a cheque for $200. On Thursday, Suneel deposited $13. How much money did Suneel have in her account then?	-$26
4.
5. During an electronics experiment in your laboratory, you measure the voltage at terminal A on your newly designed circuit. You measure +4 volts. You check the same terminal after making a small change to the circuit and this time you measure -18 volts. What was the voltage difference between the two readings?	22
6.
7. During the football game, Tyler caught three passes. One was for a touchdown and went 51 yards. The other was for a first down and was for 20 yards. The other was on a screen pass that did not work so well and ended up a loss of 4 yards. What was the total yardage gained by Tyler on the pass plays?	+67
8.
9. Use only single-digit integers. How many ways can you complete the equation? How do you know you have found all possible ways?	various
10.
11. A stock went down a total of $90 over 6 weeks. What was the average weekly change?	-$15
12.
13. Gabby started a day of shopping with $90 cash. She bought three shirts that cost $14 each, then found a $10 bill on the ground, then bought two books that cost $9 each, then paid $11 for parking. How much does she now have?	$29
14.
15. How many different ways can you write -36 as the product of two integer factors?	various
16.
17. When a plane takes off, the temperature on the ground is +10 degrees Celcius. The temperature outside the plane decreases by 5 degrees Celcius for every 1000 m it climbs above the ground. What will the temperature outside the plane be when the plane is 3000 m above the ground?	-5
18.
19. Joanne borrowed the same amount of money from her parents every day for a week. She owes them a total of $56. How much did she borrow each day?	$8

Grade 8 Math: QR Challenge

https://www.classtools.net/QR/decode.php?text=Candice-had-$20-in-her-wallet.-In-the-morning,-she-borrowed-$15-from-her-friend,-then-she-paid-$8-for-lunch-and-$4-for-a-new-notebook.-Finally,-when-she-went-home-she-received-her-$10-allowance.-How-much-money-does-Candice-have-altogether?

Question 1 (of 19)