# Print

## 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.

### Question

1. Ratio-
2. The ratio that compares each length in the scale drawing to the actual length-
3. Extended Ratio-
4. A comparison of two quantities by division written as a/b, a : b, or a to b-
5. Proportion-
6. A comparison of three (or more) numbers written as a : b : c-
7. Similar Figures-
8. The ratio of corresponding linear measurements of two similar figures-
9. Scale Factor-
10. If two angles of one triangle are congruent to two angles of another triangle, then the triangles are similar-
11. Scale Drawing-
12. If the corresponding sides of two triangles are proportional, then the triangles are similar-
13. Scale-
14. An equation that states that two ratios are equal-
15. Angle-Angle Similarity Postulate-
16. Where all lengths are proportional to their corresponding actual lengths-
17. Side-Angle-Side Similarity Theorem-
18. Two things that have the same shape but not necessarily the same size-
19. Side-Side-Side Similarity Theorem-
20. If an angle of one triangle is congruent to an angle of a second triangle, and the sides that include two angles are proportional, the the triangles are similar-

### 7.1 - 7.3 Vocab Review: QR Challenge

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