interpreting line graphs session 3. 1- a trend over time (upward trend, downward trend or stable...
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Interpreting line graphs
Session 3
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1- A trend over time (upward trend, downward trend or stable trend).
2- The size of the changes between data points. For example when did the greatest change occur?
3- What we can predict or estimate.
When interpreting a line graph the reader is usually looking for:
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Trend
Upward trend: there has been a steady/sudden/dramatic increase. Downward trend: there has been a steady.....decrease.
1.
Upward trend
Downward trend
Pattern
The general direction that a group of points seem to be heading
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Upward trend
downward trend
Back
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2. The size of the changes between data points. For example when did the greatest change occur?
When was the heart rate at highest level?
When was the growth rate fastest?
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3- What we can predict or estimate.
Estimate the height of the plant after 6 weeks?
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Extracting and reading data form line graphs
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1- Start at the point for Wednesday on the horizontal axis2- Go straight until you find the point on the line for Wednesday and then across to the vertical axis3- Give the reading
Find the temperature on Wednesday
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Station 2
Station 3
Station 4
Station 1
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The graph below shows a plant growth over several weeks.Refer to the graph to answer the following questions:•What is the scale on the vertical axis? ________________•What was the height of the plant at the start? _______________•Predict the height of the plant after 6 weeks. ________________•Describe the trend of the graph ______________________
Station 1
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This graph shows the pulse rate of Dina after running in the Junior Quad, measured after each minute.
Refer to the graph to answer the following questions:•What is the scale on the vertical axis? ________________•What was the pulse rate at the start? ________________•When was the pulse rate highest? ___________________•What result can be drawn from the graph? _____________________________________________________________
Station 1
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Station 2NAPLAN in Science
NC
Year 7
A:
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Station 3
Ref: http://www.bbc.co.uk/skillswise/topic/graphs-and-charts
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Station 4 Vocabulary activity
Word MeaningTrend A line running up the side of a graph
Horizontal axis The general direction that a group of points seem to be heading.
Scale A line running across the graph
Vertical axis A scale is a series of numbers that are increasing or decreasing by the same amount.
In your own words write the meaning of the following words:
Data_______________________________________________________________________ Graph_____________________________________________________________________
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Feedback and evaluation
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By Zani Alam