Five dolls

Five dolls

Pencil and paperOnline interactive
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
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Further Resources
This task is about estimating height.

Question 1Change answer

Below are five toy dolls.

If Rose is 15 centimetres tall, ESTIMATE how tall the other dolls are in centimetres.

a)  Peta  cm
b)  Jed  cm
c)  Frank  cm
d)  Ada  cm
Task administration: 
This task can be completed with pencil and paper or online.
Level:
3
Description of task: 
Students use a given height and diagram to estimate the height of four pictures of toy dolls.
Curriculum Links: 
This resource can help to identify students' understanding of length and repeated units .
Learning Progression Frameworks
This resource can provide evidence of learning associated with within the Mathematics Learning Progressions Frameworks.
Read more about the Learning Progressions Frameworks.
Answers/responses: 
  Y7 (03/1999)
a) Accept range 6.5-8.5

Accept range 6-6.49 or 8.51-9

2 marks – moderate

1 mark – moderate

b) Accept range 27-33

Accept range 25.5-26.9 or 33.1-34.5

2 marks – moderate

1 mark – moderate

c) Accept range 9-11

Accept range 8-8.9 or 11.1-12

2 marks – moderate

1 mark – easy

d) Accept range 20-25

Accept range 17.5-19.9 or 25.1-27.5

2 marks – moderate

1 mark – easy

Diagnostic and formative information: 
  Common Error Likely Reason
a)
b)
c)
d)
3
12
4
9
Actual length of each doll in centimetres.