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
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:
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
Upward trend
downward trend
Back
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?
3- What we can predict or estimate.
Estimate the height of the plant after 6 weeks?
Extracting and reading data form line graphs
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
Station 2
Station 3
Station 4
Station 1
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
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
Station 2NAPLAN in Science
NC
Year 7
A:
Station 3
Ref: http://www.bbc.co.uk/skillswise/topic/graphs-and-charts
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_____________________________________________________________________
Feedback and evaluation
By Zani Alam
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