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QR Challenge: Finding the 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. Find the area of a rectangle with a length of 16cm and height of 12cm192 square centimetres
2. Find the area of a rectangle with a length of 8m and height of 6m48 square metres
3. Find the area of a rectangle with a length of 20mm and height of 50mm1000 square millimetres
4. Find the area of a square with a side length of 24cm576 square centimetres
5. Find the area of a rectangle with a length of 200m and height of 3m600 square metres
6. Find the area of a triangle with a base of 7m and height of 4m14 square metres
7. Find the area of a triangle with a base of 13mm and height of 3mm19.5 square millimetres
8. Find the area of a triangle with a base of 36cm and height of 30cm540 square centimetres

 


Finding the area of rectangles and triangles: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_area_of_a_rectangle_with_a_length_of_16cm_and_height_of_12cm

Question 1 (of 8)

 


Finding the area of rectangles and triangles: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_area_of_a_rectangle_with_a_length_of_8m_and_height_of_6m

Question 2 (of 8)

 


Finding the area of rectangles and triangles: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_area_of_a_rectangle_with_a_length_of_20mm_and_height_of_50mm

Question 3 (of 8)

 


Finding the area of rectangles and triangles: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_area_of_a_square_with_a_side_length_of_24cm

Question 4 (of 8)

 


Finding the area of rectangles and triangles: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_area_of_a_rectangle_with_a_length_of_200m_and_height_of_3m

Question 5 (of 8)

 


Finding the area of rectangles and triangles: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_area_of_a_triangle_with_a_base_of_7m_and_height_of_4m

Question 6 (of 8)

 


Finding the area of rectangles and triangles: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_area_of_a_triangle_with_a_base_of_13mm_and_height_of_3mm

Question 7 (of 8)

 


Finding the area of rectangles and triangles: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_area_of_a_triangle_with_a_base_of_36cm_and_height_of_30cm

Question 8 (of 8)