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QR Challenge: Construct algebraic expressions

Created using the ClassTools QR Treasure Hunt Generator

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. Multiples the number by 7 7n
2. Subtracts 2 from the number n - 2
3. Multiples the number by 2 then subtracts 1 2n - 1
4. Divides the number by 6 then subtracts 4 𝑛/6 - 4
5. Subtracts 7 from the number and then multiplies the result by 8 8 (n-7)

 



Construct algebraic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Multiples_the_number_by_7

Question 1 (of 5)

 



Construct algebraic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Subtracts_2_from_the_number

Question 2 (of 5)

 



Construct algebraic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Multiples_the_number_by_2_then_subtracts_1

Question 3 (of 5)

 



Construct algebraic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Divides_the_number_by_6_then_subtracts_4

Question 4 (of 5)

 



Construct algebraic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Subtracts_7_from_the_number_and_then_multiplies_the_result_by_8

Question 5 (of 5)