Plotting the grid

Plotting the grid

Pencil and paper
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
Working with Students
Further Resources
This task is about giving the co-ordinates of points on a graph.

a)
Find each of these co-ordinates on the grid above. Write down the letter at each point.
 
 
i)
 
ii)
 
iii)
 
iv)
(9,1) __________
 
(8,10) __________
 
(3,8) __________
 
(11,5) __________
 

b)

Draw a straight line to join points C, E, and G.

 
 
i)
 
ii)
Draw a new point on the grid that fits on this line and label it K.
 
Write down the co-ordinates of K. ( ___ , ___ )
Task administration: 
This task is completed with pencil and paper only.
Level:
3
Curriculum info: 
Maths, Number and Algebra, Patterns and relationships
Keywords: 
co-ordinates, plotting co-ordinates
Description of task: 
Students locate co-ordinates on a grid, then plot a further co-ordinate.
Learning Progression Frameworks
This resource can provide evidence of learning associated with
Patterns and relationships, sets 4-5
within the Mathematics Learning Progressions Frameworks.
Read more about the Learning Progressions Frameworks.
Answers/responses: 

   

Y8 (03/2000)

a)

i)
ii)
iii)
iv)

J
B
F
H

All correct – difficult

3 correct – moderate

b)

i)

 

ii)

Draws a line connecting C, E, and G and
puts a point on the line (including extensions
to the line segment CG).

Any 1 of:

•   (13,11)
•   (11,9)
•   (9,7)
•   (8,6)
•   (6,4)
•   (5,3)
•   (4,2)
•   (3,1)
•   (2,0)
•   Answer consistent with where the student has drawn point K.

moderate

 

moderate
Diagnostic and formative information: 
 

Common error

Likely reason

a) i)
    ii)
    iii)
    iv)
    ii)

D
E
I
A
various

Transposes the x and y co-ordinates.

b) i)

Draws a point that is not on the line.