Enlarging shapes III

Enlarging shapes III

Pencil and paperOnline interactive
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
Working with Students
Further Resources
This task is about enlargement and scale factors.  

Question Change answer

Draw what each shape would look like when it is enlarged.
 
a)  Enlarge this shape by a scale factor of 2.

Question Change answer

b)  Enlarge this shape by a scale factor of 3.

Question Change answer

c)  Enlarge this shape by a scale factor of 4.
Task administration: 
This task can be completed with pencil and paper or by drawing online.
Copyright: 
Copyright: NZCER
Level:
3
Curriculum info: 
Maths, Geometry and Measurement, Transformation
Keywords: 
enlargement, scale factor, resizing
Description of task: 
Using grids, students enlarge shapes by different scale factors.
Learning Progression Frameworks
This resource can provide evidence of learning associated with
Geometric thinking, sets 3-4
within the Mathematics Learning Progressions Frameworks.
Read more about the Learning Progressions Frameworks.
Answers/responses: 

 

 

Y6 (09/2000)

2 marks
(all correct)
or
1 mark
(uses wrong scale factor or 1 to 2 lines are the wrong length)

a)

all correct – moderate

1 error – easy

2 marks
(all correct)
or
1 mark
(uses wrong scale factor or 1 to 2 lines are the wrong length)

b)

all correct – difficult

1 error – moderate

2 marks
(all correct)
or
1 mark
(uses wrong scale factor or 1 to 2 lines are the wrong length)

c)

all correct – difficult

1 error – moderate
NOTE: It does not matter where the shape is placed on the grid, only that the size and shape are correct.
Teaching and learning: 
This resource involves drawing an enlargement of a shape on a grid. Students prior experience drawing is a key consideration before making an assessment judgement about their understnading of enlargement.  
The task assesses both enlargement and students' ability to represent their thinking through drawing.
Assessing their drawing involves consideration about the students skill level as well as the medium in which they draw. For example, drawing online with a mouse is likely to be more difficult than drawing on a tablet with an finger, which may in turn be more difficult than drawing with pencil and paper.