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QR Challenge: Treasure hunt NSPCC Number Day

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. If a cricket ball and bat cost £110, and the bat costs £100 more than the ball, how much does the ball cost?£10
2. A fisherman was asked, “How long was the fish you caught?” He said, “It’s 30cm plus one quarter of its length.” How long was the fish?37.5cm
3. It takes 12 minutes to saw a log into 4 pieces. Given that each cut takes an equal amount of time, how many minutes would it take to saw the log into 6 pieces instead?18 minutes
4. A farmer has 22 cows. Lightning injures all but 5 of the cows. How many are not injured?5
5. It takes 7 women 3 hours to build a wall. How long does it take 3 women to build the same wall?7 hours
6. Jonah starts counting out loud in fives, starting with 130, then 135. What is the 13th number that Jonah says?190
7. The length of a rectangle is increased by 50% and the width is decreased by 50%. By what percentage does the area of the rectangle increase or decrease?0%

 


Treasure hunt NSPCC Number Day: QR Challenge

https://www.classtools.net/QR/decode.php?text=If-a-cricket-ball-and-bat-cost-£110,-and-the-bat-costs-£100-more-than-the-ball,-how-much-does-the-ball-cost?

Question 1 (of 7)

 


Treasure hunt NSPCC Number Day: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-fisherman-was-asked,-“How-long-was-the-fish-you-caught?”-He-said,-“It’s-30cm-plus-one-quarter-of-its-length.”-How-long-was-the-fish?

Question 2 (of 7)

 


Treasure hunt NSPCC Number Day: QR Challenge

https://www.classtools.net/QR/decode.php?text=It-takes-12-minutes-to-saw-a-log-into-4-pieces.-Given-that-each-cut-takes-an-equal-amount-of-time,-how-many-minutes-would-it-take-to-saw-the-log-into-6-pieces-instead?

Question 3 (of 7)

 


Treasure hunt NSPCC Number Day: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-farmer-has-22-cows.-Lightning-injures-all-but-5-of-the-cows.-How-many-are-not-injured?

Question 4 (of 7)

 


Treasure hunt NSPCC Number Day: QR Challenge

https://www.classtools.net/QR/decode.php?text=It-takes-7-women-3-hours-to-build-a-wall.-How-long-does-it-take-3-women-to-build-the-same-wall?

Question 5 (of 7)

 


Treasure hunt NSPCC Number Day: QR Challenge

https://www.classtools.net/QR/decode.php?text=Jonah-starts-counting-out-loud-in-fives,-starting-with-130,-then-135.-What-is-the-13th-number-that-Jonah-says?

Question 6 (of 7)

 


Treasure hunt NSPCC Number Day: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-length-of-a-rectangle-is-increased-by-50%-and-the-width-is-decreased-by-50%.-By-what-percentage-does-the-area-of-the-rectangle-increase-or-decrease?

Question 7 (of 7)