QR Challenge: Ratio- GCSE MATHS

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.Sophie has 60 pencils. The ratio of sharpened pencils to blunt pencils is 4:1. How many sharpened pencils does Sophie have?	48
2. 2. Alex and Thomas share 30 sweets. They divide them in the ratio 3:2. How many sweets does Thomas have?	12
3. 3. Split 77 in the ratio 2:6:3	14:42:21
4. 4. Divide £70 in the ratio 2 : 5.	£20 : £50
5. 5. The ratio of girls to boys in a class is 2 : 3. What fraction of the class are girls?	2/5
6. 6. Share £90 between Allen and Emily in the ratio 2:1.	£60 : 30
7. 7. Benny and Owen share apples in the ratio 8: 9.If Owen gets 54 apples how many apples does Benny get?	48
8. 8. 45% of students in a maths class are males. What is the ratio of male: female?	9:20
9. 9. Clara and Dawn have some stamps in the ratio 5 : 9. Dawn has 36 more stamps than Clara. Work out the number of stamps Clara has.	45
10. 10. The ratio of dogs to cats is 5:3. The ratio of fish to dogs is 6:1. Find the ratio of cats to fish. Give your answer in its simplest form.	1 : 10

 

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