QR Challenge: Halloween Maths Scavenger Hunt
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. What is the difference between 333 and 455 | 122
|
2. What is the product of 20 and 30 | 600
| 3. What is 2% of 400 metres | 8
| 4. How many straight edges are there on a cube | 12
| 5. Factorise:x^2-x-72 | (x-9)(x+8)
| 6. Peter has a 1 euro coin.How many 32c cans of lemonade can he buy | 3
| 7. The perimeter of a square is twenty centimetres. What is the length of each side | 5
| 8. Expand:(x-7)(x-7) | x^2-16x+63
| 9. What is the biggest number you can make out of the following 3 digits 4,7,9 | 974
| 10. A bag of sweets weighs 20g. How many would weigh exactly 1 kg | 50
| 11. In a school of 120 children only 1/3 are girls. How many boys are in the school | 80
| 12. How many minutes are there in 4 and half-hours | 270minutes |
Halloween Maths Scavenger Hunt: QR Challenge
https://www.classtools.net/QR/decode.php?text=What_is_the_difference_between_333_and_455
Question 1 (of 12)
Halloween Maths Scavenger Hunt: QR Challenge
https://www.classtools.net/QR/decode.php?text=What_is_the_product_of_20_and_30
Question 2 (of 12)
Halloween Maths Scavenger Hunt: QR Challenge
https://www.classtools.net/QR/decode.php?text=What_is_2%_of_400_metres
Question 3 (of 12)
Halloween Maths Scavenger Hunt: QR Challenge
https://www.classtools.net/QR/decode.php?text=How_many_straight_edges_are_there_on_a_cube
Question 4 (of 12)
Halloween Maths Scavenger Hunt: QR Challenge
https://www.classtools.net/QR/decode.php?text=Factorise:x^2-x-72
Question 5 (of 12)
Halloween Maths Scavenger Hunt: QR Challenge
https://www.classtools.net/QR/decode.php?text=Peter_has_a_1_euro_coin.How_many_32c_cans_of_lemonade_can_he_buy
Question 6 (of 12)
Halloween Maths Scavenger Hunt: QR Challenge
https://www.classtools.net/QR/decode.php?text=The_perimeter_of_a_square_is_twenty_centimetres._What_is_the_length_of_each_side
Question 7 (of 12)
Halloween Maths Scavenger Hunt: QR Challenge
https://www.classtools.net/QR/decode.php?text=Expand:(x-7)(x-7)
Question 8 (of 12)
Halloween Maths Scavenger Hunt: QR Challenge
https://www.classtools.net/QR/decode.php?text=What_is_the_biggest_number_you_can_make_out_of_the_following_3_digits_4,7,9
Question 9 (of 12)
Halloween Maths Scavenger Hunt: QR Challenge
https://www.classtools.net/QR/decode.php?text=A_bag_of_sweets_weighs_20g._How_many_would_weigh_exactly_1_kg
Question 10 (of 12)
Halloween Maths Scavenger Hunt: QR Challenge
https://www.classtools.net/QR/decode.php?text=In_a_school_of_120_children_only_1/3_are_girls._How_many_boys_are_in_the_school
Question 11 (of 12)
Halloween Maths Scavenger Hunt: QR Challenge
https://www.classtools.net/QR/decode.php?text=How_many_minutes_are_there_in_4_and_half-hours
Question 12 (of 12)
