Detailed Case Study Search the Archive Feedback

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.

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!

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

## Question | ## Answer |

1. Wayne is going to carry out a survey to record information about the type of vehicles passing the school gate. Draw a suitable data collection sheet that Wayne could use. | _ |

2. If the mean number of people getting off a train over 5 stops was 8.6, how many people got off the train in total? | 43 |

3. Mr Brown chooses one book from the library each week. He chooses a crime novel or a horror story or a non-fiction book. The probability that he chooses a horror story is 0.4 The probability that he chooses a non-fiction book is 0.15 Work out the probability that he chooses a crime novel. | 0.45 |

4. Fred earns £84 for each car he sells. In January he sold 17 cars. How much did he earn in January? | £1428 |

5. Lisa has £10 to buy some stamps. Each stamp costs 28p. If she buys as many stamps as possible, how much change does she receive? | 20p |

6. What is the definition of the word ‘perpendicular’? | Two lines meeting or crossing at a right angle |

7. A circular pizza is cut into 4 slices through the centre. The angles of three of the slices are 85°, 110° and 65°. What is the angle of the 4th slice? | 100° |

8. What is the name of a straight line that touches the surface of a circle once only? | Tangent |

9. Write 0.028 as a fraction in its simplest form. | 7/250 |

10. Crisps cost 34p per packet. A bottle of OJ costs £1.28. Michelle buys 3 packets of crisps and a bottle of OJ. She pays with a £5 note. How much change should she get? | £2.70 |

11. Simplify 5(2n + 3m) + 3(n – 4m) | 13n +3n |

12. The perimeter of a rectangle is 22cm. The length of the rectangle is 8cm. Work out the area of the rectangle. | 24cm2 |

13. A rectangular piece of card measures 10cm by 8cm. A rectangular hole measuring 4cm by 2cm is cut from the centre. Work out the area of the card that is left. | 72cm2 |

14. The first five terms of a sequence are 7, 10, 13, 16, 19. Find an expression for the nth term of the sequence. | 3n+4 |

15. Daniel leaves his home at 0700. He drives 87 miles to work at an average speed of 36 miles per hour. At what time does he arrive at work? | 0925 |

16. Work out 34% of 1500. | 510 |

17. The perimeter of a square is 50cm. Work out the area of the square. | 156.25cm2 |

18. What is the volume of a box measuring 10cm by 4cm by 12cm? | 480cm2 |

19. The time it takes to fill a water tank is 7 minutes to the nearest minutes. What is the shortest time it could take? | 6minutes 30 seconds |

20. An irregular pentagon has the following exterior angles: 102°, 78°, 63° and 43°. What is the size of the missing exterior angle? | 74° |

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