# 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 What is 35% of 200? 70 Evaluate 2 to the power of 6 64 What is the next term in this sequence? 3, -3, -9, -15, ... -21 Work out the mean of 3,12,7,12,11 9 Solve 3a-8=-71 -21 What is the square root of 81? 9 Work out 0.35x0.22 0.077 Round 4563 correct to 1 significant figure 5000 Convert 70000m into km 70 625 x 8 = 5000 What is the difference between 10 squared and 9 squared? 19 1.5 divided by 0.3= 5 4 x 8 - 2 x 3 = 26 What is 370000 cm squared in metres squared? 37 What is the 8th prime number? 19 Estimate 435 x 5.3? 2000 What is the difference between 3 cubed and 2 cubed? 19 11 divided by 2.2 5 How many seconds are in a day? 86400 Calculate -7 - - 10 3 If you can see this then it worked! :)

### LOVEISLAND MATHS COMPETITION: QR Challenge

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