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Grade 2 · lesson 2 of 4

Read Bar Height from a Whole-Number Scale

Use the supplied zero-to-count description.

About 15 minutes, plus any extended practice

Download the grade pack

Supplied materials

  • Paper and a pencil; drawing and spoken explanations are welcome. An adult may read directions and options aloud.
  • Supplied worked-case record: On a scale labeled 0,1,2,...,10, the reading bar reaches 8.
  • All quantities and shape descriptions are supplied in the worked example and questions; no purchase or personal information is needed.

Learn the idea

A bar graph’s labeled scale connects its length to a count. Start reading at the stated zero baseline and use the tick values. The bar’s width or color does not determine its count. A taller bar shows more only when both bars use the same scale.

Use the supplied zero-to-count description. Read the endpoint value, name the category and count, and compare only bars with the same scale. Redraw the bar with one equal interval for each recorded item.

Follow the bar endpoint across to its scale value. Bar width is not the recorded count. Draw a zero baseline and label each whole-number tick equally.

  1. Draw a zero baseline and label each whole-number tick equally.
  2. Follow the worked example. Point to each number or shape feature and say what it tells you.
  3. Use the supplied zero-to-count description.
  4. Try the question and then the three practice questions. Check your answers and explain any change you make.
Worked example

See the method in action

On a scale labeled 0,1,2,...,10, the reading bar reaches 8. It shows eight responses. A wide bar reaching 6 still shows six; width is decoration. Both use the same baseline and one-response intervals, so eight exceeds six. Follow the bar endpoint across to its scale value. Bar width is not the recorded count. Draw a zero baseline and label each whole-number tick equally.

Your turn

Check your reasoning

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Helpful tips
  • Follow the bar endpoint across to its scale value.
  • Bar width is not the recorded count.
On a zero-based whole-number scale, a category bar ends at 5. What count does it represent?

Feedback appears here after you check. This is practice, not a graded school assessment.

See the answer and explanation

5

The endpoint value on the count scale gives the category total. The result is 5.

Take it further

Bars end at 9 and 4 on the same scale. Expected difference: 5 responses.

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More practice: try new cases

Choose an answer for each problem. Explain your method on paper, then use the feedback to decide what to revisit.

More practice: try new cases
1. On a zero-based whole-number scale, a category bar ends at 6. What count does it represent?
Need a hint?
  • Follow the bar endpoint across to its scale value.
  • Bar width is not the recorded count.
2. On a zero-based whole-number scale, a category bar ends at 7. What count does it represent?
Need a hint?
  • Follow the bar endpoint across to its scale value.
  • Bar width is not the recorded count.
3. On a zero-based whole-number scale, a category bar ends at 8. What count does it represent?
Need a hint?
  • Follow the bar endpoint across to its scale value.
  • Bar width is not the recorded count.

Your choices are temporary. Feedback appears after you check all the answers.

Nothing here is saved to an account or sent to a teacher. Keep your own notes or download them before leaving. The score describes these questions; it does not certify subject mastery.

Check the subject sources

These LifeStarter passages, scenarios and exercises are authored for this Academy with AI assistance and review. External resources keep their publishers’ terms. A grade label suggests a starting level; it does not establish alignment with your school’s complete requirements.