# 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. Sum the first 10 numbers in the Fibonacci sequence.142
2.
3. I have lived for two billion seconds. What decade of my life am I in?7th
4.
5. How many more odd then even numbered days are there in this year, 2015?7
6.
7. Ben gained 93% of the possible 600 marks. How many more marks would he need to have scored to gain 96% of the marks?18
8.
9. The three different faces of a cuboid have areas of 72m^2, 36m^2 and 18m^2. What is the volume of the cuboid?216
10.
11. When throwing a six-sided dice the average or expected value is 3.5. Another n-sided dice has an average or expected value of 4.5, what is the value of n?8
12.
13. There is a triangle with coordinates (x, 0), 0, y) and (x, y). Find an expression for the perimeter of this triangle.(x + y + √(x^2+y^2 ))
14.
15. Jono has a box containing 28 domino pieces but it is an incomplete set. He has 27 dominoes in his box and there are 156 spots on them altogether. Which of his domino pieces is missing?6-6
16.
17. A piece of wire makes a circle of area 100 square centimetres. This wire is then cut and made into two equal sized circles. Find the total area of these two circles.50
18.
19. The numbers from zero to fourteen are grouped in 5 sets of three, and the numbers added. This produces 5 consecutive numbers. Find them.(19, 20, 21, 22, 23)
20.
21. Two 6-sided dice are thrown and the results may be added, subtracted, divided or multiplied. What whole numbers less than 20 are not possible results?(13, 14, 17, 19)
22.
23. What is the smallest prime number that is equal to the sum of two prime numbers and is also equal to the sum of three different prime numbers?19
24.
25. Sita was making triangles with ten equal sized sticks. She found she could not make a 1, 4, 5 triangle. Name the ones she could make. (2, 4, 4 and 3, 3, 4)
26.
27. How many minutes is it until 5:00 if forty minutes ago it was four times as many minutes past 2 o'clock?(15 or 28)
28.
29. A square is cut into 37 squares of which 36 have area 1 cm2. What is the length of the side of the original square?10

### academic Day - Mathematics Challenge 9: QR Challenge

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