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QR Challenge: Binary numbers

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. What is 15 as a binary number?1111
2. What is 110011 as a decimal number?51
3. What is the answer to 11 + 101 as a binary number?1000
4. What is 100 as a decimal number?4
5. What is 19 as a binary number?10011
6. What is the answer to 1100 + 1100 as a binary number?11000
7. What is 11000 as a decimal number?24
8. Which of these binary numbers is larger - 1010110 or 101011?1010110
9. What is 7 as a binary number?111
10. Which of these binary numbers is larger - 1101 or 1010?1101
11. What is 10101 as a decimal number?21
12. What is the answer to 111 - 11 as a binary number?100
13. what is 10 as a decimal number?2
14. What is 54 as a binary number?110110
15. What is 101 as a decimal number?5
16. What is the answer to 110 + 101 as a binary number?1011
17. What is 23 as a binary number?10111
18. Which of these binary numbers is larger - 110011 or 100011?110011
19. What is 1001001 as a decimal number?73
20. What is the answer to 10 + 100 as a binary number?1100

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-15-as-a-binary-number?

Question 1 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-110011-as-a-decimal-number?

Question 2 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-the-answer-to-11-+-101-as-a-binary-number?

Question 3 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-100-as-a-decimal-number?

Question 4 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-19-as-a-binary-number?

Question 5 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-the-answer-to-1100-+-1100-as-a-binary-number?

Question 6 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-11000-as-a-decimal-number?

Question 7 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Which-of-these-binary-numbers-is-larger---1010110-or-101011?

Question 8 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-7-as-a-binary-number?

Question 9 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Which-of-these-binary-numbers-is-larger---1101-or-1010?

Question 10 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-10101-as-a-decimal-number?

Question 11 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-the-answer-to-111---11-as-a-binary-number?

Question 12 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=what-is-10-as-a-decimal-number?

Question 13 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-54-as-a-binary-number?

Question 14 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-101-as-a-decimal-number?

Question 15 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-the-answer-to-110-+-101-as-a-binary-number?

Question 16 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-23-as-a-binary-number?

Question 17 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Which-of-these-binary-numbers-is-larger---110011-or-100011?

Question 18 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-1001001-as-a-decimal-number?

Question 19 (of 20)

 


Binary numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-the-answer-to-10-+-100-as-a-binary-number?

Question 20 (of 20)