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Graphing our class data
Students vote in a quick survey, watch the results arrive live, and turn their own class's data into scaled bar graphs — first on paper, then checked against a spreadsheet chart.
Standards
- CCSS 3.MD.B.3 — Draw a scaled picture graph and a scaled bar graph to represent a data set with several categories. Solve one- and two-step "how many more" and "how many less" problems using information presented in scaled bar graphs.
- ISTE 1.3 Knowledge Constructor — Students use digital tools to collect information and construct knowledge from it.
Objective
Students will be able to draw a scaled bar graph (each square representing 2 students) from a class data set and answer "how many more / how many fewer" questions using the graph.
The big idea: scale
Materials & setup
- A one-question Google Form ("Which recess activity do you like best?" with 4 choices) — see Self-grading forms for building Forms.
- A short exit-ticket Form set to Quiz mode (3 questions).
- A Google Sheet with two columns: Activity and Students (empty until the vote).
- Projector, student devices (one per student or pair), graph paper, crayons or colored pencils.
- The Form link shared in Google Classroom or as a QR code.
Lesson sequence
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5 min
Hook: a question worth answering
Ask: "Which recess activity is the class favorite? How could we find out for sure?" Take predictions.
Tech: Students open the one-question Google Form and vote privately.
Why it helps: Everyone votes at once with no peer pressure, and the data collects itself.
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10 min
Look at the data
Project the Form's Responses → Summary tab. Together, copy the counts into a tally table on the board and into the Sheet.
Tech: Forms totals each choice instantly.
Why it helps: Real data about their class is far more motivating than a textbook table — and there are no counting errors to derail the math.
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15 min
Model a scaled bar graph
On graph paper under the document camera, model a bar graph where each square = 2 students. Talk through odd numbers (half a square). Then insert a bar chart in the Sheet and show that it matches.
Tech: A Google Sheets bar chart built from the class counts.
Why it helps: Changing the chart's axis steps from 1 to 2 to 5 shows instantly how scale changes the bars but not the data.
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15 min
Partner practice
Pairs draw their own scaled bar graph on paper, then answer: "How many more students chose ___ than ___?" and one two-step question. They check their bars against the projected chart.
Tech: The projected Sheets chart acts as an answer key.
Why it helps: Students self-correct right away instead of waiting for you to grade.
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5 min
Exit ticket
Three-question Form: read a value from a scaled graph, a "how many more" question, and a "how many fewer" question.
Tech: A self-grading Form.
Why it helps: The Summary tab shows who needs reteaching before tomorrow's lesson.
Differentiation
Support
Provide a pre-filled tally table and keep the scale at 2. Offer a partly drawn graph with the axis already labeled.
English learners
Sentence frames: "___ more students chose ___ than ___." Add pictures to the Form choices so the vote doesn't depend on reading.
Stretch
Students choose their own scale (5 or 10), explain the trade-off, and write a two-step question for their partner.
Assessment
- During practice: look for correct scale use (each square = 2) and accurate bar heights for odd counts.
- Exit ticket: 3 of 3 = ready to move on; 2 of 3 = quick small-group check-in; 0–1 = reteach scale with manipulatives.
Sources & further reading
- Grade 3 Measurement & Data (3.MD) — Common Core State Standards.
- ISTE Standards for Students — International Society for Technology in Education.