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. How many square yards of carpet are required to cover a rectangular floor that is 12 feet long and 3 feet wide? (There are 3 feet in a yard.) | 12 |

2. | |

3. The Centerville Middle School chess team consists of two boys and three girls. A photographer wants to take a picture of the team to appear in the local newspaper. She decides to have them sit in a row with a boy at each end and the three girls in the middle. How many such arrangements are possible? | 12 |

4. | |

5. Isabella had a week to read a book for a school assignment. She read an average of 36 pages per day for the first three days and an average of 44 pages per day for the next three days. She then finished the book by reading 10 pages on the last day. How many pages were in the book? | 250 |

6. | |

7. Margie's car can go 32 miles on a gallon of gas, and gas currently costs $4 per gallon. How many miles can Margie drive on $20 worth of gas? | 160 |

8. | |

9. There are four more girls than boys in Ms. Raub's class of 28 students. What is the ratio of number of girls to the number of boys in her class? | 4:3 |

10. | |

11. Danica wants to arrange her model cars in rows with exactly 6 cars in each row. She now has 23 model cars. What is the smallest number of additional cars she must buy in order to be able to arrange all her cars this way? | 1 |

12. | |

13. A sign at the fish market says, "50% off, today only: half-pound packages for just $3 per package." What is the regular price for a full pound of fish, in dollars? | 12 |

14. | |

15. Rachelle uses 3 pounds of meat to make 8 hamburgers for her family. How many pounds of meat does she need to make 24 hamburgers for a neighborhood picnic? | 9 |

16. | |

17. Margie bought 3 apples at a cost of 50 cents per apple. She paid with a 5-dollar bill. How much change did Margie receive? | $3.50 |

18. | |

19. On average, for every 4 sports cars sold at the local dealership, 7 sedans are sold. The dealership predicts that it will sell 28 sports cars next month. How many sedans does it expect to sell? | 49 |

20. | |

21. A taxi ride costs $1.50 plus $0.25 per mile traveled. How much does a 5-mile taxi ride cost? | $2.75 |

22. | |

23. Alice is making a batch of cookies and needs 2 and 1/2 cups of sugar. Unfortunately, her measuring cup holds only 1/4 cup of sugar. How many times must she fill that cup to get the correct amount of sugar? | 10 |

24. | |

25. A square with side length 8 is cut in half, creating two congruent rectangles. What are the dimensions of one of these rectangles? | 4 by 8 |

26. A bug crawls along a number line, starting at -2. It crawls to -6, then turns around and crawls to 5. How many units does the bug crawl altogether? | 15 |

27. | |

28. A cell phone plan costs $20 each month, plus 5¢ per text message sent, plus 10¢ for each minute used over 30 hours. In January Michelle sent 100 text messages and talked for 30.5 hours. How much did she have to pay? | $28 |

29. | |

30. One can holds 12 ounces of soda. What is the minimum number of cans needed to provide a gallon (128 ounces) of soda? | 11 |

31. | |

32. Sandwiches at Joe's Fast Food cost $3 each and sodas cost $2each. How many dollars will it cost to purchase 5 sandwiches and 8 sodas? | $31 |

33. | |

34. The ratio of Mary's age to Alice's age is 3:5. Alice is 30 years old. How old is Mary? | 18 |

35. | |

36. You and five friends need to raise $1500 dollars in donations for a charity, dividing the fundraising equally. How many dollars will each of you need to raise? | $250 |

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