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QR Challenge: Ratios and Unit Rates

Created using the ClassTools QR Treasure Hunt Generator

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Teacher Notes

A. Prior to the lesson:

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

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

B. The lesson:

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!

C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

Questions / Answers (teacher reference)

Question

Answer

1. 100 pieces of candy were passed out to 20 trick-or-treaters5 pieces of candy per trick-or-treater
2. 1353 bats in 11 caves123 bats per cave
3. 50 ghosts in 10 haunted houses5 ghosts per haunted house
4. 728 mad scientists attended 182 Halloween parties4 mad scientists per Halloween party
5. 35 caramel apples for 7 kids5 caramel apples per kid
6. 552 pumpkin seeds per 92 cups of witch's brew6 pumpkin seeds per cup of witch's brew
7. 20 pumpkins in 5 yards4 pumpkins per yard
8. 18 zombie movie tickets cost $117$6.50 per ticket
9. 172 students hung out at 2 Halloween Dances86 students per dance
10. $31.50 for 7 cupcakes$4.50 per cupcake
11. 204 costumes were sold in 6 days34 costumes per day
12. 150 goblins carved 30 jack-o-lanterns5 jack-o-lanterns per goblin
13. $18 for 4 Halloween masks$4.50 per mask
14. 140 pieces of candy corn for 20 cookies7 pieces of candy corn per cookie
15. $7.20 for 6 bottles of potion$1.20 per bottle
16. 828 spiders in 36 webs23 spiders per web
17. The teacher passed out 60 candy bars to 15 students4 candy bars per student
18. 654 warts on 6 witches109 warts per witch
19. Mary ate 15 pieces of candy in 3 hours. How long will it take her to eat 105 pieces of candy?7 hours

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=100_pieces_of_candy_were_passed_out_to_20_trick-or-treaters

Question 1 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=1353_bats_in_11_caves

Question 2 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=50_ghosts_in_10_haunted_houses

Question 3 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=728_mad_scientists_attended_182_Halloween_parties

Question 4 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=35_caramel_apples_for_7_kids

Question 5 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=552_pumpkin_seeds_per_92_cups_of_witch's_brew

Question 6 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=20_pumpkins_in_5_yards

Question 7 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=18_zombie_movie_tickets_cost_$117

Question 8 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=172_students_hung_out_at_2_Halloween_Dances

Question 9 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=$31.50_for_7_cupcakes

Question 10 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=204_costumes_were_sold_in_6_days

Question 11 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=150_goblins_carved_30_jack-o-lanterns

Question 12 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=$18_for_4_Halloween_masks

Question 13 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=140_pieces_of_candy_corn_for_20_cookies

Question 14 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=$7.20_for_6_bottles_of_potion

Question 15 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=828_spiders_in_36_webs

Question 16 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=The_teacher_passed_out_60_candy_bars_to_15_students

Question 17 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=654_warts_on_6_witches

Question 18 (of 19)

 


Ratios and Unit Rates: QR Challenge

https://www.classtools.net/QR/decode.php?text=Mary_ate_15_pieces_of_candy_in_3_hours._How_long_will_it_take_her_to_eat_105_pieces_of_candy?

Question 19 (of 19)