Reading scales II

Reading scales II

Auto-markingPencil and paperOnline interactive
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
Working with Students
Further Resources
This task is about reading scales.
Perri is baking a cake.

Question 1Change answer

a)  He pours the milk into a jug.
measuring-jug.gif
How much milk is in the jug?  ml

Question 1Change answer

b)  Perri sets the temperature dial on the oven.
temperature-dial.gif
 
What is the temperature showing on the dial?  °C

Question 1Change answer

c)  Perri weighs the flour on the scales.
 
weighing-scales.gif
How much flour is on the scales?  g
Task administration: 
This task can be completed with pencil and paper or online (with auto marking displayed to students).
Level:
3
Curriculum info: 
Maths, Geometry and Measurement, Measurement
Keywords: 
reading scales, linear scales
Description of task: 
Students read scales from pictures of everyday measuring equipment.
Curriculum Links: 
This resource can help to identify students' understanding of reading linear scales.
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) 250 very easy
b) 180 easy
c) 525 moderate
Diagnostic and formative information: 
  Common error Likely reason
a)
b)
c)		 205, 200.5, 201, 200.1
195, 199
505, 500.5, 501, 500.1		 Place value error on the value of the measurement subdivisions (seen as tenths or ones rather than tens).
a)
c)		 2.5, 25
5.1, 51, 52		 Wrong magnitude of answer.
b) 190 Treats measurement subdivisions as 10° rather than 20°  (i.e., 200° - 10°).
c) 520 Treats measurement subdivisions as 20 g rather than 25 g (i.e., 500 g + 20 g).
a)
b)
c)		 200, 300
200
500		 Rounds answer to nearest 100.