Pie charts
Interpret and construct pie charts: calculate sector angles from data, draw sectors accurately, and read values from pie charts to solve problems
Lesson
Set out your lesson
“Pie charts means practising the idea at the table with counters or paper models and one clear check. We will demo once, then your child tries.”
Bring to the table
- Paper shapes or a ruler and pencil
- Shape name cards
Extra for the adult
Worked example. A rectangle has four right angles. Naming the property is the check.
Optional challenge. For Pie charts, add one harder example after success.
What to notice. Keep one parent note: examples tried; results; support used. This session samples Pie charts, not mastery.
Share and support
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Teaching approaches
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1 approach
Pie charts 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: Paper shapes or a ruler and pencil; Shape name cards. Adult traces or shows one shape and names a property (sides/angles). Child identifies three shapes or measures one simple property and records it. Done: three correct shape/property responses. Stop after the fresh check; keep optional challenge for another day.
Family records and proof options
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Save photos, notes, and attendance. Export a proof packet for compliance or portfolio reviews.
Practice this concept
Start practicePie charts practice
Practice key ideas from Pie charts.
Free · no login · no ads · Practice answers and completion are not saved. Parent observation remains the lesson record.
Learning resources
Extra practice links — they do not replace Gakuva’s teaching approach.
Illustrative Mathematics · Practice link — not the full lesson
Electoral College
Before you open · source notes
Electoral College supports reading parts of a whole in a data context useful for pie-chart thinking. Not every political science unit.
Free, no sign-in. A teacher solution is on the same page, so use the student view with your child.
Before you openAsk the learner what one part of the whole represents and how parts add to the total.
Opening this link does not save learning or assess mastery.
Source, access and review notes
Public Illustrative Mathematics task page. The .html address responds HTTP 308 to this URL. An anonymous GET of this URL on 2026-11-12 returned HTTP 200 with no login or payment prompt. Where a teacher solution is present, it is on the same page as the student task; this check did not find a separate locked student view. An adult can use the student view section and should not read a solution aloud. Advertising was not observed in the fetched HTML text; that is not a browser, device, or ad-free guarantee. This is a paper or discussion task, not an automatically marked interactive game. Opening the link does not save practice or assess mastery. Diagrams on the page use missing or filename-only alt text, so they are not an accessible image equivalent. Accessibility still depends on an adult describing the picture.
Illustrative Mathematics. “Electoral College.” Licensed CC BY-NC-SA 4.0. External task; Gakuva does not copy, host, embed, or redistribute it.
CC BY-NC-SA 4.0 — link only
Check understanding
- Read a pie chart and determine what fraction or percentage of the total each sector represents
- Construct a pie chart from given data by calculating sector angles
- Use a pie chart to determine the actual quantity represented by each sector given the total
“Can your child read a pie chart — for example, one showing how a family spends its weekly budget — and use it to answer questions and solve problems?”
Curriculum record
- Type
- Representational
- Subject
- Mathematics
- Domain
- Data & Statistics
- Age range
- Ages 10–13
Standards