QR Challenge: Area of rectangles and triangles

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. Area of a triangle with a width of 3m and length of 4m	6m²
2. Area of a triangle with a width of 6m and length of 8m	24m²
3. Area of a triangle with a width of 12cm and length of 50cm	300cm²
4. Area of a triangle with a width of 10m and length of 8m	40m²
5. Area of a triangle with a width of 12mm and length of 7mm	42mm²
6. Area of a triangle with a width of 2m and length of 8m	8m²
7. Area of a triangle with a width of 10m and length of 10m	50m²
8. Area of a triangle with a width of 7cm and length of 4cm	14cm²
9. Area of a triangle with a width of 3m and length of 8m	12m²
10. Area of a triangle with a width of 20mm and length of 20mm	200mm²
11. Area of a rectangle with a width of 3m and length of 4m	12m²
12. Area of a rectangle with a width of 6m and length of 8m	48m²
13. Area of a rectangle with a width of 12cm and length of 50cm	600cm²
14. Area of a rectangle with a width of 10m and length of 8m	80m²
15. Area of a rectangle with a width of 12mm and length of 7mm	84mm²
16. Area of a rectangle with a width of 2m and length of 8m	16m²
17. Area of a rectangle with a width of 10m and length of 10m	100m²
18. Area of a rectangle with a width of 7cm and length of 4cm	28cm²
19. Area of a rectangle with a width of 3m and length of 8m	24m²
20. Area of a rectangle with a width of 20mm and length of 20mm	400mm²

 

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