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QR Challenge: Year 9 algebra

Created using the ClassTools QR Treasure Hunt Generator

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Teacher Notes

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

3. Print out the QR codes.

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.

Questions / Answers (teacher reference)

Question

Answer

1. Look a the hexagon paaterns on the wall. Each one is made of equilateral triangles. How many triangles in the smallest hexagon you could make? How many triangles do you add on to make the next hexagon? How many triangles in that hexagon altogether? Can you continue the pattern....what are the next 2 terms?6,24,54,96
2. Look at the tetrahedron above you. Each face is an equilateral triangle. If the length of each side is x, can you write an expression for the surface area of the tetrahedron? (Hint- you will need to use pythagoras) 3root3xsquared
3. Look at this formula for the volume of a box. When h=9, what is V? 2376
4. This is an isosceles triangle. If the angle in the bottom left corner is 75 degress, what is the angle at the top of the triangle?30 degrees
5. Find the viewpoint in square 86, 83. If you looked North West and saw the top of Dodd Fell Hill, how far away is this in real life? 2km
6. Measure the diameter of one of these circles. What is the formula for the area of a circle? Use it to calculate the total area of all 5 circles that you can see. 192.4
7. Solve this equation: x^2+5x-14 =0 x=-7, x=2

 


Year 9 algebra: QR Challenge

https://www.classtools.net/QR/decode.php?text=Look-a-the-hexagon-paaterns-on-the-wall.-Each-one-is-made-of-equilateral-triangles.-How-many-triangles-in-the-smallest-hexagon-you-could-make?-How-many-triangles-do-you-add-on-to-make-the-next-hexagon?-How-many-triangles-in-that-hexagon-altogether?-Can-you-continue-the-pattern....what-are-the-next-2-terms?

Question 1 (of 7)

 


Year 9 algebra: QR Challenge

https://www.classtools.net/QR/decode.php?text=Look-at-the-tetrahedron-above-you.-Each-face-is-an-equilateral-triangle.-If-the-length-of-each-side-is-x,-can-you-write-an-expression-for-the-surface-area-of-the-tetrahedron?-(Hint--you-will-need-to-use-pythagoras)

Question 2 (of 7)

 


Year 9 algebra: QR Challenge

https://www.classtools.net/QR/decode.php?text=Look-at-this-formula-for-the-volume-of-a-box.-When-h=9,-what-is-V?

Question 3 (of 7)

 


Year 9 algebra: QR Challenge

https://www.classtools.net/QR/decode.php?text=This-is-an-isosceles-triangle.-If-the-angle-in-the-bottom-left-corner-is-75-degress,-what-is-the-angle-at-the-top-of-the-triangle?

Question 4 (of 7)

 


Year 9 algebra: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find-the-viewpoint-in-square-86,-83.-If-you-looked-North-West-and-saw-the-top-of-Dodd-Fell-Hill,-how-far-away-is-this-in-real-life?

Question 5 (of 7)

 


Year 9 algebra: QR Challenge

https://www.classtools.net/QR/decode.php?text=Measure-the-diameter-of-one-of-these-circles.-What-is-the-formula-for-the-area-of-a-circle?-Use-it-to-calculate-the-total-area-of-all-5-circles-that-you-can-see.

Question 6 (of 7)

 


Year 9 algebra: QR Challenge

https://www.classtools.net/QR/decode.php?text=Solve-this-equation:-x^2+5x-14-=0

Question 7 (of 7)