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 property says that a number + 0= that number | Identity Property |

2. Round 294 to the nearest tens place | 290 |

3. Round 296 to the nearest hundreds place | 300 |

4. Jaeyla wants to buy new books and pencils for each person in her class. The books will cost $124 and the pencils will cost $38. Find the total cost of the item. | $162 |

5. When rounding, which will give you a more accurate estimate? Rounding to the tens place or hundreds place? | Tens place |

6. Does is this equation true or false? 310+0=0 | false |

7. Round 183 to the nearest hundred | 200 |

8. Which property does this show 230+24=24+230? | Commutative Property |

9. Which number is halfway on a number line? | 5 |

10. Does 5 round up or round down? | Round up |

11. Which number to I look to in order to see if I have to round up or down? | Next door neighbor |

12. Round 41 to the nearest ten | 40 |

13. What number makes this equation true. 22+(3+1)=(22+1)+____ | 3 |

14. Which property has to do with grouping numbers ( ) | Associative property |

15. Johnathan has $200 to spend that he got from his birthday. He really wants to buy a video game that costs $110. He also wants to buy a new pair of shoes that costs $102. He thinks that he has enough money because if you round to the hundreds place, $110 rounds to $100 and $102 rounds to $100. Does he have enough money? | No, each items costs more than $100. |

16. How are addition and subtraction related? | They are opposite operations. We can check our answer using the opposite operation. |

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