QR Challenge: Finding the Area of Rectangles and Triangles
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. 1. I'm a triangle that has perpendicular length of 4 mm and by 6 mm wide. What my area? | answer
|
2. 2. I'm a rectangle with lengths of 3 m by 4 m. What is my area? | answer
| 3. 3. I'm a triangle that has a perpendicular length of 20 cm by 4 cm wide. What is my area? | answer
| 4. 4. I'm a rectangle with lengths of 70 m by 3m. What is my area? | answer
| 5. 5. I'm a rectangle with lengths of 12 cm by 8 cm. What is my area? | answer
| 6. 6. I'm a triangle with a perpendicular length of 8 cm by 8 cm wide. What is my area? | answer
| 7. 7.I'm a triangle with a perpendicular length of 6mm by 2mm wide. What is my area? | answer
| 8. 8. I'm a square of side that measure 30 cm. What is my area? | answer
| 9. 9. I'm a triangle with the height of 6 cm and the base length of 5 m. What is my area? | answer
| 10. 10. I'm a rectangle with a length of 11 m and a breadth of 5 m. What is my area? | answer
| 11. 11. I'm a rectangle with a length of 16 m and breath of 10 cm. What is my area? | answer
| 12. 12. I'm a triangle that has a base length of 10 cm and my area is 40 square centimetres. What is my height? | answer |
Finding the Area of Rectangles and Triangles: QR Challenge
https://www.classtools.net/QR/decode.php?text=1.-I'm-a-triangle-that-has-perpendicular-length-of-4-mm-and-by-6-mm-wide.-What-my-area?
Question 1 (of 12)
Finding the Area of Rectangles and Triangles: QR Challenge
https://www.classtools.net/QR/decode.php?text=2.-I'm-a-rectangle-with-lengths-of-3-m-by-4-m.-What-is-my-area?
Question 2 (of 12)
Finding the Area of Rectangles and Triangles: QR Challenge
https://www.classtools.net/QR/decode.php?text=3.-I'm-a-triangle-that-has-a-perpendicular-length-of-20-cm-by-4-cm-wide.-What-is-my-area?
Question 3 (of 12)
Finding the Area of Rectangles and Triangles: QR Challenge
https://www.classtools.net/QR/decode.php?text=4.-I'm-a-rectangle-with-lengths-of-70-m-by-3m.-What-is-my-area?
Question 4 (of 12)
Finding the Area of Rectangles and Triangles: QR Challenge
https://www.classtools.net/QR/decode.php?text=5.-I'm-a-rectangle-with-lengths-of-12-cm-by-8-cm.-What-is-my-area?
Question 5 (of 12)
Finding the Area of Rectangles and Triangles: QR Challenge
https://www.classtools.net/QR/decode.php?text=6.-I'm-a-triangle-with-a-perpendicular-length-of-8-cm-by-8-cm-wide.-What-is-my-area?
Question 6 (of 12)
Finding the Area of Rectangles and Triangles: QR Challenge
https://www.classtools.net/QR/decode.php?text=7.I'm-a-triangle-with-a-perpendicular-length-of-6mm-by-2mm-wide.-What-is-my-area?
Question 7 (of 12)
Finding the Area of Rectangles and Triangles: QR Challenge
https://www.classtools.net/QR/decode.php?text=8.-I'm-a-square-of-side-that-measure-30-cm.-What-is-my-area?
Question 8 (of 12)
Finding the Area of Rectangles and Triangles: QR Challenge
https://www.classtools.net/QR/decode.php?text=9.-I'm-a-triangle-with-the-height-of-6-cm-and-the-base-length-of-5-m.-What-is-my-area?
Question 9 (of 12)
Finding the Area of Rectangles and Triangles: QR Challenge
https://www.classtools.net/QR/decode.php?text=10.-I'm-a-rectangle-with-a-length-of-11-m-and-a-breadth-of-5-m.-What-is-my-area?
Question 10 (of 12)
Finding the Area of Rectangles and Triangles: QR Challenge
https://www.classtools.net/QR/decode.php?text=11.-I'm-a-rectangle-with-a-length-of-16-m-and-breath-of-10-cm.-What-is-my-area?
Question 11 (of 12)
Finding the Area of Rectangles and Triangles: QR Challenge
https://www.classtools.net/QR/decode.php?text=12.-I'm-a-triangle-that-has-a-base-length-of-10-cm-and-my-area-is-40-square-centimetres.-What-is-my-height?
Question 12 (of 12)