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QR Challenge: Area of rectangles and triangles

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

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. Area of a triangle with a width of 3m and length of 4m6m²
2. Area of a triangle with a width of 6m and length of 8m24m²
3. Area of a triangle with a width of 12cm and length of 50cm300cm²
4. Area of a triangle with a width of 10m and length of 8m40m²
5. Area of a triangle with a width of 12mm and length of 7mm42mm²
6. Area of a triangle with a width of 2m and length of 8m8m²
7. Area of a triangle with a width of 10m and length of 10m50m²
8. Area of a triangle with a width of 7cm and length of 4cm14cm²
9. Area of a triangle with a width of 3m and length of 8m12m²
10. Area of a triangle with a width of 20mm and length of 20mm200mm²
11. Area of a rectangle with a width of 3m and length of 4m12m²
12. Area of a rectangle with a width of 6m and length of 8m48m²
13. Area of a rectangle with a width of 12cm and length of 50cm600cm²
14. Area of a rectangle with a width of 10m and length of 8m80m²
15. Area of a rectangle with a width of 12mm and length of 7mm84mm²
16. Area of a rectangle with a width of 2m and length of 8m16m²
17. Area of a rectangle with a width of 10m and length of 10m100m²
18. Area of a rectangle with a width of 7cm and length of 4cm28cm²
19. Area of a rectangle with a width of 3m and length of 8m24m²
20. Area of a rectangle with a width of 20mm and length of 20mm400mm²

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_triangle_with_a_width_of_3m_and_length_of_4m

Question 1 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_triangle_with_a_width_of_6m_and_length_of_8m

Question 2 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_triangle_with_a_width_of_12cm_and_length_of_50cm

Question 3 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_triangle_with_a_width_of_10m_and_length_of_8m

Question 4 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_triangle_with_a_width_of_12mm_and_length_of_7mm

Question 5 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_triangle_with_a_width_of_2m_and_length_of_8m

Question 6 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_triangle_with_a_width_of_10m_and_length_of_10m

Question 7 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_triangle_with_a_width_of_7cm_and_length_of_4cm

Question 8 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_triangle_with_a_width_of_3m_and_length_of_8m

Question 9 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_triangle_with_a_width_of_20mm_and_length_of_20mm

Question 10 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_rectangle_with_a_width_of_3m_and_length_of_4m

Question 11 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_rectangle_with_a_width_of_6m_and_length_of_8m

Question 12 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_rectangle_with_a_width_of_12cm_and_length_of_50cm

Question 13 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_rectangle_with_a_width_of_10m_and_length_of_8m

Question 14 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_rectangle_with_a_width_of_12mm_and_length_of_7mm

Question 15 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_rectangle_with_a_width_of_2m_and_length_of_8m

Question 16 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_rectangle_with_a_width_of_10m_and_length_of_10m

Question 17 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_rectangle_with_a_width_of_7cm_and_length_of_4cm

Question 18 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_rectangle_with_a_width_of_3m_and_length_of_8m

Question 19 (of 20)

 


Area of rectangles and triangles : QR Challenge

https://www.classtools.net/QR/decode.php?text=Area_of_a_rectangle_with_a_width_of_20mm_and_length_of_20mm

Question 20 (of 20)