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
4. Cut them out and place them around your class / school.
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!
4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.
Question | Answer |
1. Find the equations of the lines that pass through the point (0,4) and are (a) parallel to and (b) perpendicular to the line 5x + 2y = 3. | (a) y = -5/2x + 4 and (b) y = 2/5x + 4 | 2. Find the slope-intercept form of the equation of the line that passes through the points (2,-1) and (-3,4). | y = -x +1 | 3. Determine algebraically whether the function is even, odd, or neither. (a) f(x) = 2x^3 - 3x (b) f(x) = 3x^4 + 5x^2 | (a) odd (b) even | 4. Use a graphing utility to graph the functions and to approximate (to two decimal places) any relative minimum or relative maximum values of the function f(x) = -x^3 - 5x^2 + 12. | relative minimum: (-3.33,-6.52) relative maximum: (0,12) | 5. Determine whether the function has an inverse function, and if so, find the inverse function. (a) f(x) = x^3 + 8 and (b) f(x) = x^2 + 6 | (a) f^-1(x) = cube root (x - 8) (b) No inverse | 6. Identify the vertex and intercepts of the graph of y = x^2 + 4x + 3. | vertex: (-2,-1); intercepts: (0,3), (-3,0), (-1,0) | 7. List all the possible rational zeros of the function. Use a graphing utility to graph the function and find all the rational zeros. f(x) = g(x) = 2x^4 - 3x^3 + 16x - 24 | (plus or minus is in front of all of these values) 1, 2, 3, 4, 6, 8, 12, 24, 1/2, 3/2; real zeros: x = -2 and 3/2 | 8. Sketch the graph of the rational function g(x) = (x^2 + 2)/(x - 1) | see attached | 9. Use the properties of logarithms to expand the expression as a sum, difference, and/or multiple logarithms. (a) log (base 2) of 3a^4 (b) ln (x times the square root (x + 1))/2e^4 | log (base 2) 3 + 4 log (base 2) a (b) ln x + 1/2 ln (x + 1) - ln 2 - 4 | 10. Solve each equation for x. Round your result to three decimal places where necessary. (a) 5^(2x) = 2500 (b) -xe^(-x) + e^(-x) = 0 | (a) 2.431 (b) 1 |
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