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. Find the volume of a cone that has a diameter of 6 inches and a height of 10 inches. Use 3 for pi. Be sure to show your work. | 90 cubic inches |

2. Find the hypotenuse of a triangle that has a leg of 10 cm and a leg of 24 cm. Be sure to show your work. | 26 cm |

3. A rectangle with an area of 15 square inches is dilated by a scale factor of two-thirds. Find the area of the new rectangle. Be sure to show your work. | 6 2/3 square inches |

4. Find the surface area of a rectangular prism that has a length of 4 ft, a width of 3 feet, and a height of 2 feet. Be sure to show your work. | 52 square feet |

5. A triangle has a base of 8 mm and a height of 12 mm. Find the area of a similar triangle that has a base of 6 mm. Be sure to show your work. | 27 square mm |

6. A student raised her math average from a 75 to a 90. What was the percent of increase? Be sure to show your work. | 20% increase |

7. If 89 = 4x – 17, what is the value of x? Be sure to show your work. | 26.5 |

8. What is the capacity of a cylindrical barrel that has a height of 2.5 feet and a diameter of 2.4 feet? Use 3 for pi. Be sure to show your work. | 10.8 cubic feet |

9. Danny walked 9 blocks north to school and then 12 blocks east to the park. What is the shortest distance that Danny can walk home? Be sure to show your work. | 15 blocks |

10. Is (2, 4) a solution for the equation y = -4x – 4? Show proof. | yes |

11. If all the dimensions of a 1-foot cube are doubled, what is the volume of the new cube? Be sure to show your work. | 8 cubic feet |

12. If a soup can has a height of 5 inches and a radius of 2 inches, what is the area of its label? Use 3 for pi. Be sure to show your work. | 30 square inches |

13. If a Jeep averages 13 miles to the gallon, how much gasoline would be needed to travel 234 miles? Be sure to show your work. | 18 miles |

14. If Emma can type 35 words per minute, how long would it take her to type her 770-word essay? Be sure to show your work. | 22 minutes |

15. If the point (3, -11) is reflected across the x-axis, what are the coordinates of the resulting image? Explain why. | (3, 11) |

16. A bag contains 5 red marbles, 3 blue marbles, and 2 yellow marbles. If you take two marbles from the bag (without replacement), what is the probability that they will both be red? Be sure to show your work. | 2 out of 9 |

17. If a triangle with a perimeter of 21 cm is dilated by a scale factor of one-third, what would be the perimeter of the new triangle? Be sure to show your work. | 7 cm |

18. The dimensions of a rectangular prism that has a volume of 48 cubic feet are all dilated by a scale factor of one-half, what would be the capacity of the new prism? | 6 cubic feet |

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