Read counts from a fractional measurement plot
The idea
A line plot places a mark at each measurement; repeated values have several marks at the same position.
Step by step
- A line plot places a mark at each measurement; repeated values have several marks at the same position.
- Read the fractional positions and the key before counting marks.
- Select the positions named by the question, then combine or compare their mark counts.
Example
A line plot records plant lengths. Its mark counts are: 1/4 m: 2 marks 1/2 m: 3 marks 3/4 m: 1 marks Each mark represents one plant.
How many plants were measured in all?
Answer
6
Add every mark count: 2 + 3 + 1 = 6 plants.
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5 questionsTry it together
Measure several paper strips to the nearest quarter meter or quarter unit. Draw a line plot and ask a total and a comparison question.
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