QR Challenge: Dividing amounts into a given ratio (Easy)

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. A recipe mixes butter and flour in the ratio 7 : 5. If we make 240g in total how much butter is used?	140
2. Cement is made by mixing water and gravel in the ratio 3 : 8. If we make 121kg of cement how much gravel is needed?	88
3. Cheryl and Ashley share £300 in the ratio 3 : 7. How much does Ashley get?	210
4. Cheryl and Ashley share £300 in the ratio 3 : 7. How much does Cheryl get?	90
5. A recipe mixes sugar and flour in the ratio 2 : 5. If we make 280g in total how much sugar is used?	80
6. Juice is made mixing water and squash in the ratio 1 : 8. If we make 27 litres of juice, how much water is needed?	3
7. Ben and Ted paid 20p and 80p respectively for a lottery ticket. They won the jackpot of £10,000 how much should Ted get?	8000
8. Juice is made mixing water and squash in the ratio 5 : 7. If we make 36 litres of juice, how much water is needed?	15
9. Claire and Amy share £910 in the ratio 9 : 1. How much does Amy get?	91
10. Rosy and Jim worked for 2 hours and 5 hours respectively. They were paid £14 between them. How much should Rosy get?	4

 

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