# 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. 1.At what temperature Celsius does water freeze?0 degrees
2. 2.At what temperature Celsius does water boil?100 degrees
3. 3.What charge does the oxygen atom have in a water molecule?negative (-)
4. 4.What charge does hydrogen atoms have in a water molecule?positive (+)
5. 5.Name 3 properties of solids.definite volume, definite shape, little kinetic energy
6. 6.Name 3 properties of liquids.definite volume, not a definite shape, ability to flow
7. 7.Name 3 properties of gases.no definite volume, no definite shape, high kinetic energy
8. 8.Describe the particles of a solid.close together,do not move freely, vibrate
9. 9.Describe the particles of a liquid.close together, slide past each other, not fixed in place
10. 10.Describe the particles of a gas.move freely, not close together, ability to expand
11. 11.Why does ice float?It is less dense than water
12. 12.What is meant by a "polar molecule"?a molecule that has a positive charge at one end and a negative charge at the other end
13. 13.How is energy transferred through conduction?energy is transferred from one object to another when they touch
14. 14.What happens to the density of an object as it warms up?It becomes less dense
15. 15.Which property of water allows it to form droplets when in liquid form? cohesion
16. 16.What is true of all matter?it has mass and takes up space
17. 17.What instrument is used to find the temperature of water?thermometer
18. 18.What is the volume of a rectangular solid that is 20cm long, 10cm wide, and 50cm high?10,000cm cubed
19. 19.What instrument is used to find the mass of an object?TBB
20. 20.What technique is used to find the volume of an irregular-shaped object? Water Displacement

### Semester Exam Review Part 2: QR Challenge

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