Working out capacity

Working out capacity

Pencil and paperOnline interactive
Overview
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Marking Student Responses
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Further Resources
This task is about estimating capacity.

Question 1Change answer

glasses with different amounts of liquid in them

Tom's glass has 100 ml of drink in it.
Estimate how much drink is in ...
a)  Vicky's glass ml
b)  Pam's glass ml
c)  Shay's glass ml
d)  Chris' glass ml
Task administration: 
This task can be completed with pencil and paper or online.
Level:
3
Curriculum info: 
Maths, Geometry and Measurement, Measurement
Keywords: 
estimation, capacity, repeated units
Description of task: 
Students estimate the amount of liquid in four different glasses based on the amount given that is in a fifth glass.
Curriculum Links: 
This resource can help to identify students' understanding of estimation and measurement of capacity using non standard and standard units (Measurement).
Learning Progression Frameworks
This resource can provide evidence of learning associated with
Measurement sense, set 5
within the Mathematics Learning Progressions Frameworks.
Read more about the Learning Progressions Frameworks.
Answers/responses: 
  

Y7 (03/1999)
a) 400 [Accept 360-440] moderate
b) 200 [Accept 180-220] easy
c) 250 [Accept 225-275] moderate
d) 50 [Accept 40-60] easy

NOTE: The interval for accepting estimates is ±10% except for d) where it is extended to the next whole 10 ml as very few students estimated to within 5 ml.

Diagnostic and formative information: 
  Common error Likely reason
a)
b)
c)
d)		 4 or 40
2 or 20
2.5 or 25
0.5 or 5		 Assumes Tom's glass has 1 or 10 ml in it.
Next steps: