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. Sally has 4 boxes of cookies. There are 6 cookies in each box. 1) Draw a tape diagram. 2) How many cookies does Sally have all together? | 24 |

2. 8 x 7 = ? | 56 |

3. Does (3 x 10) + (4 x 10) = 7 x 10? Why or why not? | 0 |

4. 9 x 9 = ? | 81 |

5. Bryan divides 18 pizza slices between 3 friends. 1) Draw an array where each column (columns go up and down) represents one friend's pizza slices. 2) How many slices does each friend get? | 6 |

6. Elijah bought flowers for his 3 sisters. How many would he need to buy so that they each could have 7 flowers? | 21 |

7. Does (2 x 5) + (3 x 5) = 11 + 15? Why or why not? | 0 |

8. Alison was having a sleepover. She needed enough bowls of spaghetti to feed herself plus 8 friends. If each person eats two bowls of spaghetti, how many bowls does Alison need to make? | 18 |

9. 9 x 4 = ? | 36 |

10. 7 x ? = 35 | 5 |

11. Draw a number bond that shows one possible way to break down 7 tens. | 1 |

12. Karla went trick-or-treating and wanted to bring back enough candy to share evenly with her sister who stayed home sick. If Karla wants at least 15 pieces of candy for herself, how much candy in total does she need to bring home? | 0 |

13. 3 x ? = 9 | 3 |

14. 7 x 10 = (5 x 10) + (_?__ x 10) | 2 |

15. Draw what your hands look like when using your hand calculator for 9 x 2. | 1 |

16. 8 fours = 5 fours + __?__ fours | 3 |

17. On one shelf there are 8 books. Draw and label a tape diagram that shows how many books are on 8 shelves. | 1 |

18. Does (5x5) + (4x5) = 25 + 20. Why or why not? | 0 |

19. 63 bunnies were moved into bunny homes that could hold 7 bunnies each. How many bunny homes were needed? | 9 |

20. Godzilla wanted a giant pinata for his birthday party. He invited 5 other monsters over, and wanted each of his guests and himself to get at least 5 pieces of monster candy. How many pieces of candy does Godzilla need to buy? | 30 |

21. There are eight tables in a room. Each table holds the same number of bowls of guacamole. In all, there are 40 bowls of guacamole. How many bowls are on each table? | 5 |

22. 9 fives = 5 fives + __?___ fives | 4 |

23. __?___ fours = 6 fours + 4 fours | 10 |

24. Draw what your hands look like when using your hand calculator for 9 x 6. | 1 |

25. 6 x 8 = ? | 48 |

26. The Carrot Ghost plants 8 rows of 4 carrots. He then adds 2 rows of 4 tomatoes. How many plants did the Carrot Ghost plant in all? Show your array. | 1 |

27. Draw a 6 x 5 array. | 0 |

28. What is the difference between a 4 x 6 tape diagram and a 6 x 4 tape diagram? | 0 |

29. Draw a number bond to show how you can break apart 10 fives. | 0 |

30. Godzilla destroys 7 rows of 3 houses. Then Nessie destroys 3 rows of 3 houses. How many houses in all were destroyed? Show your array. | 0 |

31. John solves 7 x 3 using the break-apart and distribute strategy. Show an example (number bond or array) of what his solution might look like. | 0 |

32. There are 4 weeks in a month. How many weeks are there in 3 months? | 12 |

33. Each lizard needs 5 crickets to eat a day. For one day, Michael buys 45 crickets. He has exactly enough to feed his lizards. How many lizards must Michael own? | 9 |

34. Explain in your own words how to use the hand calculator for multiplying by 9. | 0 |

35. Make a list of as many arrays as you see in the classroom or can think of in real life as possible. (There are at least 8 in the classroom). | 0 |

36. Godzilla feels bad about destroying the houses. It will take at least 8 days to fix each one. If he destroyed 10 houses, how many days will it take him to fix them all? | 80 |

37. Fact: There are 6 teaspoons of sugar in a small chocolate bar. If you eat 6 chocolate bars, how many teaspoons of sugar do you eat? Expert level: one tablespoon is 3 teaspoons; how many tablespoons of sugar do you eat? | 36/12 |

38. Each person in this room has 10 fingers. There are 23 people in this room. How many fingers are there in this room? Expert level: double your answer (x 2) to find out how many fingers AND toes). | 230/460 |

39. Matt has 6 rows of 4 stamps. Then he spills water on 2 rows and has to throw them away. How many stamps does Matt have left? Draw an array. | 16 |

40. Pencils are sold in boxes of 6. If we had 24 students, how many boxes of pencils would we need to buy? | 4 |

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