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QR Challenge: Problem Solving

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. Suppose an object on a certain planet weighs about thrice of what it would weigh on Earth. How much would a 75kg astronaut weigh on that planet?225kg
2. An encoder can type at least 45 words per minute. Atleast how many words can she type in 15 minutes?675 words
3. A parachutist is falling with velocity of -20 feet per second. What is the distant traveled in 11 seconds?-220 feet
4. To attract costumers, a grocery store runs a sale on the fruits they sell. The fruits are loss leaders, which means the store lose money on the fruits per baskets but hopes to make up on other sales. Suppose 3000 baskets are sold at a loss of 0.15 cents each. How much is their loss?-450 cents
5. If the temperature from 30 degree Celsius went down five times by 2 degree Celsius during the night, what is the reading after the fifth drop in temperature?20 degree Celsius

 


Problem Solving: QR Challenge

https://www.classtools.net/QR/decode.php?text=Suppose-an-object-on-a-certain-planet-weighs-about-thrice-of-what-it-would-weigh-on-Earth.-How-much-would-a-75kg-astronaut-weigh-on-that-planet?

Question 1 (of 5)

 


Problem Solving: QR Challenge

https://www.classtools.net/QR/decode.php?text=An-encoder-can-type-at-least-45-words-per-minute.-Atleast-how-many-words-can-she-type-in-15-minutes?

Question 2 (of 5)

 


Problem Solving: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-parachutist-is-falling-with-velocity-of--20-feet-per-second.-What-is-the-distant-traveled-in-11-seconds?

Question 3 (of 5)

 


Problem Solving: QR Challenge

https://www.classtools.net/QR/decode.php?text=To-attract-costumers,-a-grocery-store-runs-a-sale-on-the-fruits-they-sell.-The-fruits-are-loss-leaders,-which-means-the-store-lose-money-on-the-fruits-per-baskets-but-hopes-to-make-up-on-other-sales.-Suppose-3000-baskets-are-sold-at-a-loss-of-0.15-cents-each.-How-much-is-their-loss?

Question 4 (of 5)

 


Problem Solving: QR Challenge

https://www.classtools.net/QR/decode.php?text=If-the-temperature-from-30-degree-Celsius-went-down-five-times-by-2-degree-Celsius-during-the-night,-what-is-the-reading-after-the-fifth-drop-in-temperature?

Question 5 (of 5)