# 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

• Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
• 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 4/5 - 1/10 7/10 1/5 + 1/3 8/15 9/10 - 5/6 1/15 1/2 + 3/5 1 1/10 2/3 - 1/4 5/12 2/3 + 4/5 1 7/15 3/5 + 6/7 1 16/35 1/9 + 5/9 + 11/18 1 5/18 3/4 + 1/8 - 7/16 7/16 6/7 + 1/14 - 1/2 3/7 1/4 + 2/3 + 5/6 1 3/4 4/9 of the pupils in a class are boys. What fraction are girls? 5/9 A bag contains a mixture of sweets, 2/5 of the bag are chocolates, 1/4 are toffees and the rest are mints. What fraction of the sweets are mints? 7/20 In a survey, 1/2 of the pupils say they walk to school, 1/5 said they catch the bus, the rest arrive by car. What fraction come to school by car? 3/10 1/5 of the flowers in a garden are roses, 3/10 of the flowers are tulips. What fraction of the flowers are neither? 1/2 3 3/10 + 2/5 3 7/10 2 5/9 + 1/3 2 8/9 3 1/2 + 1 3/4 5 1/4 2 3/5 - 4/15 1/3

### add subtract fractions: QR Challenge

Question 1 (of 19)

### add subtract fractions: QR Challenge

Question 2 (of 19)

### add subtract fractions: QR Challenge

Question 3 (of 19)

### add subtract fractions: QR Challenge

Question 4 (of 19)

### add subtract fractions: QR Challenge

Question 5 (of 19)

### add subtract fractions: QR Challenge

Question 6 (of 19)

### add subtract fractions: QR Challenge

Question 7 (of 19)

### add subtract fractions: QR Challenge

Question 8 (of 19)

### add subtract fractions: QR Challenge

Question 9 (of 19)

### add subtract fractions: QR Challenge

Question 10 (of 19)

### add subtract fractions: QR Challenge

Question 11 (of 19)

### add subtract fractions: QR Challenge

Question 12 (of 19)

### add subtract fractions: QR Challenge

Question 13 (of 19)

### add subtract fractions: QR Challenge

Question 14 (of 19)

### add subtract fractions: QR Challenge

Question 15 (of 19)

### add subtract fractions: QR Challenge

Question 16 (of 19)

### add subtract fractions: QR Challenge

Question 17 (of 19)

### add subtract fractions: QR Challenge

Question 18 (of 19)

### add subtract fractions: QR Challenge

Question 19 (of 19)