QR Challenge: Place Value and Multiplication

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. What place value is the 5 in the number 54,678	ten-thousands
2. What is 7x5	35
3. What place value is the 3 in the number 48,382	hundreds
4. What is 12x11	132
5. In the number 490,008 the 4 is what in place value?	hundred-thousands
6. What is 8x9	72
7. Say this number aloud 87,436. What place value is the 3	tens
8. What is 9x7	63
9. What place value is the 6 in the number 6,945,782	millions
10. What is 11x10	110
11. What place value is the 2 in the number 8,437,002	ones
12. What is 8x6	48
13. What place value is the 0 in the number 5,802,995	tne-thousands
14. What is 7x7	49
15. What place value is the 3 in the number 12,673,900	thousands
16. Say this number out loud 9,548,872. What place value is the 9?	millions
17. What is 10x10	100
18. What is 9x5	45
19. What place value is the 5 in the number 25,489,630	millions
20. What is 9x6	54

 

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