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. What value does the 7 have in the following number: 57234? | 7000 |

2. Round 569 to the nearest 10, 100 and 1000? | 570, 600, 1000 |

3. Partition the following number: 2396? | 2000+300+90+6 |

4. What is the difference between these 2 numbers: 3724 and 6723? | 2999 |

5. Use the inverse operation to check if the following sum is correct: 2439 + 4372 = 6801? | Wrong 6811 |

6. What is 4.5 litres in millilitres? | 4500 Millilitres |

7. How many minutes in 3 and a half hours? | 210 minutes |

8. If Jonny has saved 275 marbles and Sammy has saved 315, how many more marbles does Jonny need before he has the same as Sammy? | 40 |

9. What is this 270 x 3? | 810 |

10. Dan collects 264 stickers each week, how many stickers does he collect in 4 weeks? | 1056 |

11. Divide 250 by 5 | 50 |

12. What do you call an angle that is 95 degrees? | Obtuse |

13. How many degrees in a straight line? | 180 |

14. Name 2 quadrilaterals which have opposite angles which are the same: | Parallelogram and Rhombus |

15. What type of shape has identical length sides and identical internal angles? | Regular shape |

16. What is 160 + 46 + 25 ? | 231 |

17. Calculate 1500 - 195 - 45 | 1260 |

18. What are the internal angles of a triangle? | 180 |

19. Multiply 234 by 142 | 33,228 |

20. Name the 4 types of triangle: | Equilateral, Right angled, Isoceles, scalene. |

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