# 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. What is the domain of the logistic functionall reals
2. Which trig functions are odd?sine, cosecant, tangent, cotangent
3. What is the range of the arccosine?[0, pi]
4. What is the end behavior for the reciprocal function?0
5. What is the inverse of the natural log function?exponential function
6. Which of the six trig functions have the range of all real numbers?tan & cot
7. What are the twelve basic functions?12
8. How many triangles are formed? A=64deg, a=16, b=17?2
9. How many petals does r=5cos4theta have? 8
10. Find the area of the triangle, A=47degrees, b=32ft, c=19 ft?222.23ft2
11. Find the radian measure of the largest angle in triangle with sides 8,9,101.25r
12. Find the magnitude and direction of the vector 3i-4j5,307degrees
13. Ship is heading due North at 12mph, current SW at 4mph, find actual speed of boat.9.6 mph
14. Eliminate the parameter x=5cost, y=2 sint ellipse
15. Convert to polar: 3x+4y=2 r
16. Find the polar coordinate for P(-2, -5)(r,theta)
17. Simplify tanxcosxsinx
18. Find the derivative for f(x) =1-x^2 -2x

### PreCalculus Final Review problems.: QR Challenge

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