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QR Challenge: circle mystery

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. The mad scientist says the circumference is 5.01manswer
2. The math teacher says the diameter is 160cmanswer
3. The gardener says that a square with the same area would have a perimeter of 5.67manswer
4. The astronaut says the volume of a sphere with the same radius is 2.13manswer
5. A circle whose circumference is 90cm has an area of 90cm and a radius of 14.3cmanswer
6. A circle measuring 45m in diameter has a radius of 90m and a circumference of 141manswer
7. A circle whose circumference is 1m has a radius of 15.9cm and an area of 796cmanswer
8. A circle with an area of 20cm has a diameter of 5.05cm and a radius of 2.52cmanswer

 


circle mystery: QR Challenge

https://www.classtools.net/QR/decode.php?text=The_mad_scientist_says_the_circumference_is_5.01m

Question 1 (of 8)

 


circle mystery: QR Challenge

https://www.classtools.net/QR/decode.php?text=The_math_teacher_says_the_diameter_is_160cm

Question 2 (of 8)

 


circle mystery: QR Challenge

https://www.classtools.net/QR/decode.php?text=The_gardener_says_that_a_square_with_the_same_area_would_have_a_perimeter_of_5.67m

Question 3 (of 8)

 


circle mystery: QR Challenge

https://www.classtools.net/QR/decode.php?text=The_astronaut_says_the_volume_of_a_sphere_with_the_same_radius_is_2.13m

Question 4 (of 8)

 


circle mystery: QR Challenge

https://www.classtools.net/QR/decode.php?text=A_circle_whose_circumference_is_90cm_has_an_area_of_90cm_and_a_radius_of_14.3cm

Question 5 (of 8)

 


circle mystery: QR Challenge

https://www.classtools.net/QR/decode.php?text=A_circle_measuring_45m_in_diameter_has_a_radius_of_90m_and_a_circumference_of_141m

Question 6 (of 8)

 


circle mystery: QR Challenge

https://www.classtools.net/QR/decode.php?text=A_circle_whose_circumference_is_1m_has_a_radius_of_15.9cm_and_an_area_of_796cm

Question 7 (of 8)

 


circle mystery: QR Challenge

https://www.classtools.net/QR/decode.php?text=A_circle_with_an_area_of_20cm_has_a_diameter_of_5.05cm_and_a_radius_of_2.52cm

Question 8 (of 8)