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. 4652 to the nearest hundred. | 4700 |

2. Calculate the total simple interest paid on $500 loaned for 2 years at a rate of 10% per annum. | $100 |

3. 44.4 ÷ 0.01. | 4 440 |

4. How many litres of coca-cola would a plastic container of 2000 cm3 hold? | 2 |

5. The number 42 849 written to 4 significant figures. | 42 850 |

6. If P={2,3,5,7}, Q={1,3,5} and R={2,3,6} then P∩Q∩R is. | {3} |

7. If the cost of posting a 10kg parcel is $24.50, what is the cost of posting a parcel weighing 6kg? | $14.70 |

8. If x is an even number, write an expression for the ODD number immediately after it. | x+1 |

9. Robert is x years older than Lawrence. If Lawrence is 5 years old, then Robert’s age as an algebraic expression is. | x + 5 |

10. The cafeteria bought sweets at $1.00 US a dozen and sold them at $1.50 US a dozen. Calculate the percentage profit. | 50% |

11. If a man divides $480 between his two sons in the ratio 5:7, then the larger portion is. | $280 |

12. In the equation of a straight line y=mx+c, the c represents the _______ of the line. | gradient |

13. The square root of 165 (√165) can take a value between. | 12 and 13 |

14. Using the distributive law, 25 x 13 + 7 x 25 is equal to. | 25 x 20 |

15. 0.005 79 expressed in standard form is. | 5.79 x 10-3 |

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