 # QR Challenge: 3.3 The Exterior Angle Theorem

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### Create a New Quiz | Edit this quiz # 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

• Bring these devices into the lesson.

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) 58˚ 58˚ 2) 105˚ 105˚ 3) 154˚ 154˚ 4) 100˚ 100˚ 5) 75˚ 75˚ 6) 115˚ 115˚ 7) x=9 9 8) x=12 12 9) x=9 9 10) x=4 4 11) x=11 11 12 x=12 12 13) x=6 6 14 x=8 8 15) x=10 10 16) x=7 7 17) x=125˚ 125 18) x=23˚ 23 19) x=102˚ 102 20) x=96˚ 96 21) x=50˚ 50 22) x=130˚ 130 ### 3.3 The Exterior Angle Theorem: QR Challenge Question 1 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 2 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 3 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 4 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 5 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 6 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 7 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 8 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 9 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 10 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 11 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 12 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 13 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 14 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 15 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 16 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 17 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 18 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 19 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 20 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 21 (of 22) ### 3.3 The Exterior Angle Theorem: QR Challenge Question 22 (of 22)