QR Challenge: Mental maths - Year 7

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. 1) What is three-quarters of an hour before 01:35?	12: 45
2. 2) 0.5 kg is the same as: 1000 g ; 200 g ; 250 g ; 500 g	500 g
3. 3) How many kg in 4.5 tonnes?	4500 kg
4. 4) Mr Jacobs runs the 400 m in 310 s. How many min and sec is this?	5 mins 10 s
5. 5) Which is greater? 10% of a millennium or 10 decades	neither
6. 6) September has 30 days. How many days in April, June and November?	30 days
7. 7) What is the total mass of 50 fruit jars each having a mass of 500 g?	25 kg
8. 8) The long jump record stands at 4.500 m. Peter improves it by 35 mm. What is the new record?	4.535
9. 9) Mr Jacobs is 500 mm shorter than the shortest Grade 7. The boy is 1.62 m tall. How tall/short is Mr Jacobs?	1.12 m
10. 10) a + 9 = 21 , find the value of a?	16

 

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