QR Challenge: purple questions

Created using the ClassTools QR Treasure Hunt Generator

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.

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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!

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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.

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Questions / Answers (teacher reference)

Question	Answer
1. 54937 + 23592 = 78529	1
2. 25784 + 36231 = 62015	2
3. 26182 - 04732 = 21450	3
4. 49983 - 14627 = 35356	4
5. £54.50 AND £11.20	5
6. Yes, I agree because the highest two digit number you can have is 99 and two lots of 99 makes 198 which is a three-digit number. Therefore it is impossible to make a four digit number with 2 two-digit numbers.	6
7. Bob is not right because the largest single digit is 9. 9 + 9 is 18 and this means that the only digit you can carry is a 1 and it will never be a 2 when you are adding.	7
8. No, because in the question it starts with 250 bottles and then another 160 are added (250 + 160 = 410) and then 375 are delivered (410 - 375 = 35) so the answer is 35. Sam did the calculations in the wrong order.	8

 

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