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QR Challenge: The Concept of Ratios

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. What is the ratio of pink dogs to yellow dogs?5:4
2. There are 42 people sitting in chairs on the beach. There are 16 people sitting on the ground at the beach. What is the ratio of the number of people sitting in chairs to the number of people sitting on the ground at the beach?42:16
3. 9 children want chocolate cake and 6 children want truffle cake. What is the ratio of the number of children that want chocolate cake to the number of children that want truffle cake?9:6
4. What is the ratio of pink flowers to orange flowers?6:3
5. What is the ratio of red huts to blue huts?6:2
6. What is the ratio of yellow cars to the purple cars?3:2
7. What is the ratio of bats with balls to bats without balls?5:2
8. What is the ratio of lemonade to the fresh lime soda?7:4

 


The Concept of Ratios : QR Challenge

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

Question 1 (of 8)

 


The Concept of Ratios : QR Challenge

https://www.classtools.net/QR/decode.php?text=There_are_42_people_sitting_in_chairs_on_the_beach._There_are_16_people_sitting_on_the_ground_at_the_beach._What_is_the_ratio_of_the_number_of_people_sitting_in_chairs_to_the_number_of_people_sitting_on_the_ground_at_the_beach?

Question 2 (of 8)

 


The Concept of Ratios : QR Challenge

https://www.classtools.net/QR/decode.php?text=9_children_want_chocolate_cake_and_6_children_want_truffle_cake._What_is_the_ratio_of_the_number_of_children_that_want_chocolate_cake_to_the_number_of_children_that_want_truffle_cake?

Question 3 (of 8)

 


The Concept of Ratios : QR Challenge

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

Question 4 (of 8)

 


The Concept of Ratios : QR Challenge

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

Question 5 (of 8)

 


The Concept of Ratios : QR Challenge

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

Question 6 (of 8)

 


The Concept of Ratios : QR Challenge

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

Question 7 (of 8)

 


The Concept of Ratios : QR Challenge

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

Question 8 (of 8)