Work, work, work

Work, work, work

Pencil and paper
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This task is about doing calculations with time.
 
 
Whaea Elena is very tired and falls asleep at 7:00 p.m. She wakes at 8:30 p.m., and irons for 2 1/4 hours.
She goes to bed immediately and sleeps until 6:30 a.m. the next morning.
 
a) What time did Whaea Elena finally go to bed? __________
 
b) Draw the hands on the three clock faces below to show:
 
  i) the time Whaea Elena started ironing


 
  ii) the time Whaea Elena finished ironing


 
  iii) the time Whaea Elena woke up in the morning
 
Task administration: 
This task can be completed with pencil and paper only.
Level:
3
Curriculum info: 
Maths, Geometry and Measurement, Measurement
Keywords: 
analogue time, time
Description of task: 
Students calculate a finishing time from a given time, and show the analogue times for a range of activities.
Curriculum Links: 
This resource can help to identify students' understanding of duration of of events and reading a scale.
Answers/responses: 
 

Y6 (07/1997)

Y7 (07/1997)
a)   10:45 p.m. or  1/4 to 11. moderate moderate
b) i)
ii)
 
  
iii)		 Clock face showing 8:30.
Clock face showing 10:45 [accept if
the time shown is same as answer to
 a)].
Clock face showing 6:30.		 easy
easy

  
very easy

 easy
easy

  
very easy
Diagnostic and formative information: 
  Student response Likely misconception
a) 7:00 p.m., 6:30 a.m. Close reading errors.
c) i)-ii)
    i)-iii)		 Minute and hour hands transposed.
Hour hand points directly to hour rather than part-way between hours.