Swimming pool temperature

Swimming pool temperature

Pencil and paperOnline interactive
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
Working with Students
Further Resources
This task is about interpreting a time series graph.
A school caretaker measured the temperature of the water in the swimming pool over 14 days.
This is a graph of the results.
Water Temperature Over 14 Days
Graph of pool water temperature over time            

Question 2Change answer

a)  What was the temperature on Day Number 3?  ºC

Question 2Change answer

b)  On which day did the pool have the highest temperature?  Day number 

Question 2Change answer

c)  Which temperature was the most common?  ºC

Question 2Change answer

d)  For how many days was the temperature 23ºC?  days

Question 2Change answer

e)  What happened to the water temperature between Day Number 4 and Day Number 7?
Task administration: 
This task can be completed with pencil and paper or online with some auto-marking.
Copyright: 
Graphic: copyright NZCER.
Level:
3
Curriculum info: 
Maths, Statistics, Statistical investigations
Keywords: 
line graphs, graph interpretation, time-series
Description of task: 
Students interpret a line graph showing the water temperature in a school pool over a two week period.
Curriculum Links: 
This resource can be used to help to identify students' ability to interpret a time-series graph.
Learning Progression Frameworks
This resource can provide evidence of learning associated with
Statistical investigations, set 4
within the Mathematics Learning Progressions Frameworks.
Read more about the Learning Progressions Frameworks.
Answers/responses: 
 

Y6 (12/1998)
a) 24 very easy
b) 12 very easy
c) 25 very easy
d) 2 easy
e) Any 1 of:

  • The pool got cooler.
  • The temperature dropped.
  • The temperature dropped 5°C.
    [Do not accept if a figure other than 5°C is quoted].
  • Equivalent statements.
 easy

 

Diagnostic and formative information: 
  Common error Likely reason
b) 27 Gives highest temperature rather than day number.
c) 27 Interprets "most common" as "maximum".