QR Challenge: Rates and /Ratios

Created using the ClassTools QR Treasure Hunt Generator

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

• Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
• Bring these devices into the lesson.

3. Print out the QR codes.

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

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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!

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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.

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Questions / Answers (teacher reference)

Question	Answer
1. FIELD TRIP A group of 92 students went on a field trip to a nature preserve. When they arrived, they were separated into 4 groups. If each group had the same number of students, how many students were in each group	23 students
2.
3. CARS The 91 new cars in a dealership are arranged into 7 rows. If each row has the same number of cars, how many cars are in each row	13 cars
4.
5. EARNINGS Ming earned $336 from babysitting over the past 6 weeks. She earned the same amount of money each week. How much money did she earn each week	$56
6.
7. GASOLINE The Harnett family used 18 of the 26 gallons of gasoline they purchased. What fraction of the gasoline, in simplest form, did they use	9/13
8.
9. CAR WASH The student council waxed 27 of the 63 cars they washed. What fraction of the cars, in simplest form, did they wax	3/7
10.
11. BARBEQUE Mr. Salcido bought 24 hot dogs and 36 hamburgers for a barbeque. What fraction, in simplest form, of his food items are hot dogs	2/5
12.
13. CLOTHING At the ticket booth at a Florida Marlins game, 15 people wore turquoise and 24 people wore gray. What is the ratio of people who wore turquoise to the people who wore gray in simplest form?	5 to 8
14.
15. There are 12 boys and 15 girls in your class. Four new students, 3 boys and 1 girl, join your class. Compare the ratio of boys to girls before and after the new students enrolled.	4:5 15:16
16.
17. Mr. Reinard bought 5 pounds of feed for his chickens for $10. How much did the feed cost per pound in dollars?	$2
18.
19. CEREAL Of the 35 types of cereal sold in a store, 15 are advertised to be whole grain. What fraction, in simplest form, of the cereals are advertised as whole grain?	3/7

 

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