QR Challenge: Core 1 Revision
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
- Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
- Bring these devices into the lesson.
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. 1) Simplify √48 : now go outside Room 2 | 4√3
|
2. 2) Rationalise (2+√3)/(1-√3) : Now go near Medical | (-5+3√3)/(-2)
| 3. 3) Factorise x^2-4x : Now go near Room 24(E5) | x(x-4)
| 4. 4) Factorise x^2-25 : Now go near Mr Johnsons office | (x+5)(x-5)
| 5. 5) Complete the square y=x^2+4x+7 : Now go near Room 59/60 | (x+2)^2+3
| 6. 6) Complete the square y=x^2+3x+1 : Now go to the back of the stage | (x+3/2)^2-5/4
| 7. 7) How many solutions does 3x^2-x+2 have? : Now go near Careers | 0
| 8. 8) Solve these simultaneous equations.. y=x^2+xy+11 and y=2x+9 : Now go to the Music corridor | (-1/3,25/3)or(-2,5)
| 9. 9) Find all 3 linear factors of f(x)=x^3-2x-x+2 : Now go near the English office | (x-1)(x-2)(x+1)
| 10. 10) What is the remainder when x^3+x^2-14x-24 is divided by x+1 ? : Now go to the ICT Suite | -10
| 11. 11) Describe the transformation that takes y=x^2 to y=(x-4)^2 : Now go to the Science stairs | (4 0)
| 12. 12) What is the distance between the points (-2,3) and (6,-3)? : Now go to the corridor near the girls toilet | 10
| 13. 13) What are the coordinates of the mid-point of the line joining (1,3) and (5,11)? : Now go to the corridor near the boys toilet | (3,7)
| 14. 14) What is the gradient of the line joining the points (-7,-5) and (5,-3)? : Now go to Rowsley No exit! | 1/6
| 15. 15) What is the general equation of a straight line? : Now go to the elaborate ramp! | y=mx+c
| 16. 16) Find the centre and radius of the circle x^2+y^2+2x-4y-4=0 : Now go near Room 20 (E6) | (-1,2) r=3
| 17. 17) Differentiate y=x^2+5x+2 : Now go outside Room 28 (L2) | 2x+5
| 18. 18) Find the equation of the normal y=3x^2+7x-2 where x = -1 : Now go to the Vestibul | x+y+7=0
| 19. 19) Find the coordinates of the stationary point y=8x-2x^2 and determine it's nature : Now go near the Drama offices | (2,8) max
| 20. 20) ∫x^2+6x-3dx : Now go to the exit opposite the main office | x^3/3 +3x^2 -3x+c |
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=1)_Simplify_√48_:_now_go_outside_Room_2
Question 1 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=2)_Rationalise_(2+√3)/(1-√3)_:_Now_go_near_Medical
Question 2 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=3)_Factorise__x^2-4x_:_Now_go_near_Room_24(E5)
Question 3 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=4)_Factorise_x^2-25_:_Now_go_near_Mr_Johnsons_office
Question 4 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=5)_Complete_the_square_y=x^2+4x+7_:_Now_go_near_Room_59/60
Question 5 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=6)_Complete_the_square_y=x^2+3x+1_:_Now_go_to_the_back_of_the_stage
Question 6 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=7)_How_many_solutions_does_3x^2-x+2_have?_:_Now_go_near_Careers
Question 7 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=8)_Solve_these_simultaneous_equations..__y=x^2+xy+11_and_y=2x+9_:_Now_go_to_the_Music_corridor
Question 8 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=9)_Find_all_3_linear_factors_of_f(x)=x^3-2x-x+2_:_Now_go_near_the_English_office
Question 9 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=10)_What_is_the_remainder_when_x^3+x^2-14x-24_is_divided_by_x+1_?_:_Now_go_to_the_ICT_Suite
Question 10 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=11)_Describe_the_transformation_that_takes_y=x^2_to_y=(x-4)^2_:_Now_go_to_the_Science_stairs
Question 11 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=12)_What_is_the_distance_between_the_points_(-2,3)_and_(6,-3)?_:_Now_go_to_the_corridor_near_the_girls_toilet
Question 12 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=13)_What_are_the_coordinates_of_the_mid-point_of_the_line_joining_(1,3)_and_(5,11)?_:_Now_go_to_the_corridor_near_the_boys_toilet
Question 13 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=14)_What_is_the_gradient_of_the_line_joining_the_points_(-7,-5)_and_(5,-3)?_:_Now_go_to_Rowsley_No_exit!
Question 14 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=15)_What_is_the_general_equation_of_a_straight_line?_:_Now_go_to_the_elaborate_ramp!
Question 15 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=16)_Find_the_centre_and_radius_of_the_circle_x^2+y^2+2x-4y-4=0_:_Now_go_near_Room_20_(E6)
Question 16 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=17)_Differentiate_y=x^2+5x+2_:_Now_go_outside_Room_28_(L2)
Question 17 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=18)_Find_the_equation_of_the_normal_y=3x^2+7x-2_where_x_=_-1_:_Now_go_to_the_Vestibul
Question 18 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=19)_Find_the_coordinates_of_the_stationary_point_y=8x-2x^2_and_determine_it's_nature_:_Now_go_near_the_Drama_offices
Question 19 (of 20)
Core 1 Revision: QR Challenge
https://www.classtools.net/QR/decode.php?text=20)_∫x^2+6x-3dx_:_Now_go_to_the_exit_opposite_the_main_office
Question 20 (of 20)