# 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 Solve: x+5=15 x=10 Evaluate the following expression: -3+4(9+3)/9 4 What would 0 be Classified as? natural number Solve: x/4=12 48 Evaluate the following expression: -5 x -4 - - 5+3 28 What is an integer? a positive number and their opposite. Solve: 7x=21 x=3 Evaluate the following expression: -2(1-5)x4 32 What is a natural number? Counting number What would be classified as irrational? Pie or a square root What does a terminating decimal mean? When the decimals has an end or stops. What kind of decimals can a rational number have? terminating or repeating Evaluate the following expression: - -3+5(2x4) 37 Solve: 2x-5=9 x=7 Solve: 3x-4=8 x=4

### Test Review Over Classifying numbers, PEMDAS, and solving Equations : QR Challenge

Question 1 (of 15)

### Test Review Over Classifying numbers, PEMDAS, and solving Equations : QR Challenge

Question 2 (of 15)

### Test Review Over Classifying numbers, PEMDAS, and solving Equations : QR Challenge

Question 3 (of 15)

### Test Review Over Classifying numbers, PEMDAS, and solving Equations : QR Challenge

Question 4 (of 15)

### Test Review Over Classifying numbers, PEMDAS, and solving Equations : QR Challenge

Question 5 (of 15)

### Test Review Over Classifying numbers, PEMDAS, and solving Equations : QR Challenge

Question 6 (of 15)

### Test Review Over Classifying numbers, PEMDAS, and solving Equations : QR Challenge

Question 7 (of 15)

### Test Review Over Classifying numbers, PEMDAS, and solving Equations : QR Challenge

Question 8 (of 15)

### Test Review Over Classifying numbers, PEMDAS, and solving Equations : QR Challenge

Question 9 (of 15)

### Test Review Over Classifying numbers, PEMDAS, and solving Equations : QR Challenge

Question 10 (of 15)

### Test Review Over Classifying numbers, PEMDAS, and solving Equations : QR Challenge

Question 11 (of 15)

### Test Review Over Classifying numbers, PEMDAS, and solving Equations : QR Challenge

Question 12 (of 15)

### Test Review Over Classifying numbers, PEMDAS, and solving Equations : QR Challenge

Question 13 (of 15)

### Test Review Over Classifying numbers, PEMDAS, and solving Equations : QR Challenge

Question 14 (of 15)

### Test Review Over Classifying numbers, PEMDAS, and solving Equations : QR Challenge

Question 15 (of 15)