QR Challenge: Place Value Scavenger Hunt

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. Find the three-digit number with a 1 in the hundreds and the ones place	161
2. Find the three-digit number with a 4 in the tens place	947
3. Find the only four-digit number with a place holder	2403
4. Find the four-digit number where the digits add up to ten	3241
5. 7000 + 300 + 20 + 6 = ?	7326
6. 10,000 + 200 + 9 = ?	10209
7. I have 6 ones and 7 hundreds. What number am I?	706
8. I have 3 ones, 3 tens, 3 thousands and 1 hundred. What number am I?	3133
9. I have 22 thousands, 1 hundred and 36 ones. What number am I?	22136
10. I have 23 hundreds, 7 ten-thousands and 6 ones. What number am I?	72306
11. What is the value of the 4 in 9,482,000?	400,000
12. What is the value of the 1 in 1,550,000?	1,000,000

 

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