Decoding Co-ordinate references

Decoding Co-ordinate references

Pencil and paperOnline interactive
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
Working with Students
Further Resources
This task is about using co-ordinates to work out a coded message.
Each letter on the grid is given by a co-ordinate pair. Use the co-ordinates to decode the following words.

Question 2Change answer

a)  i)  (2,4) (9,3) (1,11) (12,8)
     The word is .

Question 3Change answer

     ii)  (3,8) (12,8) (11,1)
     The word is .

Question 2Change answer

     iii)  (9,3) (1,2) (12,3) (3,8) (1,11) (6,8) (11,10) (9,9) (1,2) (7,10)
     The word is .

Question 2Change answer

b)  i)  What day of the week is it today?   MONDAYTUESDAYWEDNESDAYTHURSDAYFRIDAYSATURDAYSUNDAY
     ii) Write down the code for this day by using a co-ordinate pair for each letter.
     
Task administration: 
This task can be completed with pencil and paper or online (with SOME auto marking).
Level:
4
Curriculum info: 
Maths, Geometry and Measurement, Position and orientation
Keywords: 
co-ordinates, grids, grid references
Description of task: 
Students use co-ordinates to identify a coded message.
Curriculum Links: 
This resource can be used to help to identify students' understanding of co-ordinates.
Learning Progression Frameworks
This resource can provide evidence of learning associated with
Geometric thinking, sets 4-5
within the Mathematics Learning Progressions Frameworks.
Read more about the Learning Progressions Frameworks.
Answers/responses: 
 

Y9 (04/1998)
a) i)
ii)
iii)		 draw
two
rectangles		 very easy
very easy
very easy
b) i)
ii)		 Specify the correct day of the week.
Codes for:

Monday
(5,1) (11,1) (6,8) (2,4) (1,11) (10,4)

Tuesday
(3,8) (4,2) (1,2) (7,10) (2,4) (1,11) (10,4)

Wednesday
(12,8) (1,2) (2,4) (6,8) (1,2) (7,10) (2,4) (1,11) (10,4)

Thursday
(3,8) (2,7) (4,2) (9,3) (7,10) (2,4) (1,11) (10,4)

Friday
(8,11) (9,3) (10,6) (2,4) (1,11) (10,4)
very easy
NOTE: Accept if a wrongly spelt word is correctly coded.
Diagnostic and formative information: 
  Student response Likely reason
a) i)
    ii)
    iii)
 Drow
Twa
Rectongle		 Transposes o (11,1) and a (1,11), i.e., transposes x and y co-ordinates.