# 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. A 12.5 g. marble displaces 5.0 ml's of water. What is its density?2.5 g/cm3
3. 3. On a nonlinear graph the data points are ___________Data points are not on a straight line
4. 4. On a ________ graph the data points yield a straight line.linear
5. 5. How are graphs used to show how two variables are related?One variable changes at it responds to the another variable
6. 6. What are the two scales scientist use to measure temperature and what is the official SI unit for temperature?Celsius and Kelvin (SI).
7. 7. What formula do you use to determine the volume of a rectangular object?L x W x H
8. 8. What is the density of the following object? A piece of metal with a mass of 68 g & volume of 6 cm3.11.3 g/cm3
9. 9. What is the meniscus and when do we use it?The curved upper surface of a liquid in a tube.
10. 10. How do we measure the volume of an irregularly shaped objectThe Displacement Method
11. 11. What is the difference between mass and weightMass is amount of matter in an object, weight measures the force of gravity.
12. 12. Define density.Amount of matter in a given volume.
13. 13. Convert the following measurements: a. 75 kg. = ___ mg. b. 2490 cm = ____ m. c. .7689 l = ___ ml.a. 75,000 mg. b. 249 m. c. 7689 ml.
14. 14. The SI unit used to measure mass is ______.grams.
15. 15. What problems would arise if some scientist measured lengths in meters and another used feet?They could have difficulties in making conversions.
16. 16. Why do scientists use a standard measurement system?One system allows scientists in all parts of the world to compare data and communicate their results.
17. 17. What are the three main areas of science?life, physical, earth & space.
18. 18. When a person allows personal opinions, values, or tastes to influence a conclusion, that person is said to be using ____ reasoning.subjective
19. 19. A _____ observation deals with descriptions that cannot be expressed in numbers.qualitative.
20. 20. Observations that deal with numbers are known as _______.quantitative.
21. 21 What do scientists use when making observations?senses
22. 22. mimio://10.0.45:59710:08761845a

### Measurements & Graphs: QR Challenge

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