Dot plots
Construct and interpret dot plots for numerical data sets of any kind (counts, scores, times or measurements), extending earlier measurement line plots: draw a number-line scale with equal intervals that runs from at least the minimum to the maximum value, including values nobody recorded so that gaps stay visible; place one dot per observation, stacking repeated values in evenly spaced columns; label the scale with the attribute and its units; and read the plot to find how often a value occurs, the minimum, maximum and most common values, and the total number of observations, recognising that the height of a stack is a count of observations, not a data value
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Dot plots means practising the idea at the table with counters or paper models and one clear check. We will demo once, then your child tries.
Materials: Tally sheet or simple bar/dot sketch; A short set of category counts. 1. Say the goal of Dot plots in plain words once. 2. Adult tallies one category and sketches a bar or dot plot. 3. Child tallies three small data sets and compares the tallest category. 4. Fresh check: one fresh tally comparison. Record and stop. Done: three correct tallies with a comparison sentence each. Proof: parent note of examples and results. Stop: End after the fresh check; keep optional challenge for another day.
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Secondary
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Secondary supports Dot plots. An adult previews and guides; this is a learning page, not a scored quiz.
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Before you openAsk the learner one fact they learned and one question they still have.
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Public NRICH page. An anonymous GET on 2026-11-12 returned HTTP 200 with no login or payment prompt for this URL. Opening the link does not save practice or assess mastery. An adult should preview and guide the learner.
NRICH. “Secondary.” External page; Gakuva does not copy, host, embed, or redistribute materials.
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Check understanding
- Draw a dot plot of 20 pupils' numbers of books read last month (values 0 to 12) on a scale marked 0, 1, 2, …, 12, leaving the empty value 7 visible as a gap and stacking the four 3s evenly
- Read from a dot plot that the value 5 occurs 6 times, the minimum is 0, the maximum is 12 and the most common value is 5
- Explain that a stack of 6 dots above 5 means six pupils each read 5 books, not that someone read 6 books, and count all the dots to give the number of pupils
“If your child asked 20 classmates how many books they read last month, could they draw a dot plot with one dot per person stacked above the right number on a number line — and then say how many classmates read exactly 5 books?”
Curriculum record
- Type
- Representational
- Subject
- Mathematics
- Domain
- Data & Statistics
- Age range
- Ages 11–12
Standards