# Print

## 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

• Bring these devices into the lesson.

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.

### Question

1. The earth is made up of 4 concentric layers: inner core, outer core, mantle and…crust
2. What is the thin (0-60km) outer layer of the earth called?crust
3. What is the solid centre of the earth – rich in iron and nickel – called?inner core
4. What is the temperature of the centre of the earth?Up to 5,500 degrees C
5. Which process explains why the centre of the earth is so hot?radioactive decay
6. Which of the earth’s layers is the thickest (c.2,900km) and made up of semi-molten rock?mantle
7. Name the two types of crustoceanic continental

### An Unstable Earth: QR Code Scavenger Hunt: QR Challenge

Question 1 (of 7)

### An Unstable Earth: QR Code Scavenger Hunt: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_the_thin_(0-60km)_outer_layer_of_the_earth_called?

Question 2 (of 7)

### An Unstable Earth: QR Code Scavenger Hunt: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_the_solid_centre_of_the_earth_–_rich_in_iron_and_nickel_–_called?

Question 3 (of 7)

### An Unstable Earth: QR Code Scavenger Hunt: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_the_temperature_of_the_centre_of_the_earth?

Question 4 (of 7)

### An Unstable Earth: QR Code Scavenger Hunt: QR Challenge

https://www.classtools.net/QR/decode.php?text=Which_process_explains_why_the_centre_of_the_earth_is_so_hot?

Question 5 (of 7)

### An Unstable Earth: QR Code Scavenger Hunt: QR Challenge

Question 6 (of 7)

### An Unstable Earth: QR Code Scavenger Hunt: QR Challenge

https://www.classtools.net/QR/decode.php?text=Name_the_two_types_of_crust

Question 7 (of 7)