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QR Challenge: Expanding and factorising quadratic expressions

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. Expand the following: (w + 3)(w + 5)w^2 + 8w + 15
2. Expand the following: (2x + 3)(3x + 1)6x^2 + 11x + 3
3. Expand the following: (p - 2)(p + 1)p^2 - p - 2
4. Expand the following: (3g - 2)(3g + 5)9g^2 + 9x - 10
5. Expand the following: (5x + 2)^225x^2 + 20x + 4
6. Expand the following: (2y - 6)^24y^2 - 24x - 36
7. Factorise the following: x^2 + 12x + 20(x + 10)(x + 2)
8. Factorise the following: x^2 + 8x - 33(x + 11)(x - 3)
9. Factorise the following: x^2 - 12x + 32(x - 8)(x - 4)
10. Factorise the following: x^2 - 22x + 121(x - 11)^2
11. Factorise the following: x^2 - 4x - 32(x - 8)(x + 4)
12. Factorise the following: x^2 - 9(x + 3)(x - 3)
13. Factorise the following: 4x^2 - 25(2x - 5)(2x + 5)

 


Expanding and factorising quadratic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Expand_the_following:_(w_+_3)(w_+_5)

Question 1 (of 13)

 


Expanding and factorising quadratic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Expand_the_following:_(2x_+_3)(3x_+_1)

Question 2 (of 13)

 


Expanding and factorising quadratic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Expand_the_following:_(p_-_2)(p_+_1)

Question 3 (of 13)

 


Expanding and factorising quadratic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Expand_the_following:_(3g_-_2)(3g_+_5)

Question 4 (of 13)

 


Expanding and factorising quadratic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Expand_the_following:_(5x_+_2)^2

Question 5 (of 13)

 


Expanding and factorising quadratic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Expand_the_following:_(2y_-_6)^2

Question 6 (of 13)

 


Expanding and factorising quadratic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Factorise_the_following:_x^2_+_12x_+_20

Question 7 (of 13)

 


Expanding and factorising quadratic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Factorise_the_following:_x^2_+_8x_-_33

Question 8 (of 13)

 


Expanding and factorising quadratic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Factorise_the_following:_x^2_-_12x_+_32

Question 9 (of 13)

 


Expanding and factorising quadratic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Factorise_the_following:_x^2_-_22x_+_121

Question 10 (of 13)

 


Expanding and factorising quadratic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Factorise_the_following:_x^2_-_4x_-_32

Question 11 (of 13)

 


Expanding and factorising quadratic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Factorise_the_following:_x^2_-_9

Question 12 (of 13)

 


Expanding and factorising quadratic expressions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Factorise_the_following:_4x^2_-_25

Question 13 (of 13)