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QR Challenge: Quadratic functions

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!


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)



1. 1. What kind of graph is a quadratic function?a parabola
2. 2. How do you know whether the graph opens up or down?If a is positive the graph opens up and if a is negative the graph opens down.
3. 3. How do you find the vertex?x=-b/2a. Then substitute in the value of x to find y.
4. 4. How do you know if the vertex is a minumum or maximum?High point is max and low point is min
5. 5. What is the line called that divides the graph of the function in half?line of symmetry


Quadratic functions: QR Challenge

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