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. 1. Convert to S.N.: 0.0045834 mm | 4.5 X 10-3 |

2. 2. Convert to S.N.: 438,904 s | 4.38904 X 102 |

3. 3. Convert to long form: 7.6352 X 10-3 kg | .007 |

4. 4. Convert to long form: 3.402 X 103 g | 3,402 |

5. 5. If you move the decimal place to the left to convert a number to scientific notation, will the power of 10 be positive or negative? | positive |

6. 6. How does scientific notation differ from ordinary notation? | scientific notation makes writing small/large numbers easier |

7. 7. Convert 5.70 g to mg | 5700 mg |

8. 8. Convert 783 g to kg | .783 |

9. 9. When dividing numbers in scientific notation, what must you do with the exponents? | subtract |

10. 10. (6.23 X 106) + (5.34 X 106) | 11.57 |

11. 11. (3.57 X 104) - (1.43 X 103) | 3.427 |

12. 12. (4.8 X 105) X (2.0 X 103) | 9.6 X 108 |

13. 13. (8.42 X 108)/(4.21 X 103) | 2 X 105 |

14. 14. Why is the SI system used in Science? | makes communication easier |

15. 15. When subtracting or adding 2 numbers in scientific notation, why do the exponents need to be the same? | correct place values |

16. 16. (6.48 X 10-3)-(2.81 X 10-3) | 3.67 X 10-3 |

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