Grade 8 · lesson 3 of 4

Check a presentation visual

Read the supplied description and state the particular defect. Propose a matching repair rather than claiming all graphs are misleading.

About 20 minutes, plus any extended practice

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Supplied materials

  • Paper and pencil, or a browser text area. All named people/events/records are fictional learning inputs.
  • Worked case: Excerpt A: Source: The hinge tore after five bends. Draft: The club states, "The hinge tore after five bends" (Trial Card A, section 1). Excerpt B: Note: Paper folded between two cardboard panels allows the panels to turn. Excerpt C: A graph gives numbers 4, 5 and 6 but no label saying what quantity or unit they represent. Excerpt D: Question: What count does A record? Answer: Trial Card A records five bends.
  • Primary check: Excerpt A: Source: The hinge tore after five bends. Draft: Trial Card A reports tearing following five complete folds. Excerpt B: Note: Trial A: five bends; Trial B: six bends; these are recorded observations. Excerpt C: Bars start at 4 rather than 0, but the axis has no break or visible scale explanation, exaggerating their apparent ratios. Excerpt D: Question: Will all hinges last a year? Answer: Our records cannot establish that; no year-long test exists.

Learn the idea

Visual claims need readable labels, units and scale context. A display may be accurate yet misleading if comparison groups or axes are unclear. Identify only observed problems.

Read the supplied description and state the particular defect. Propose a matching repair rather than claiming all graphs are misleading.

Original worked input: Original excerpt C: A graph gives numbers 4, 5 and 6 but no label saying what quantity or unit they represent. The task is to check a presentation visual. The answer is “missing units”. Evidence: A graph gives numbers 4, 5 and 6 but no label saying what quantity or unit they represent. Reasoning: missing units is supported because bare values do not identify the measured quantity. A cropped axis is not automatically false, but needs clear context.

  1. Read the supplied worked case and identify the part named in this lesson. An adult can model unfamiliar words.
  2. Read the supplied description and state the particular defect. Propose a matching repair rather than claiming all graphs are misleading.
  3. Check the worked solution: missing units. Evidence: A graph gives numbers 4, 5 and 6 but no label saying what quantity or unit they represent. Reasoning: missing units is supported because bare values do not identify the measured quantity. A cropped axis is not automatically false, but needs clear context.
  4. Use the new primary and practice cases. Give a reason from the actual words before checking the feedback.
Worked example

See the method in action

Original excerpt C: A graph gives numbers 4, 5 and 6 but no label saying what quantity or unit they represent. Solved: missing units. Evidence: A graph gives numbers 4, 5 and 6 but no label saying what quantity or unit they represent. Reasoning: missing units is supported because bare values do not identify the measured quantity. A cropped axis is not automatically false, but needs clear context. Read the supplied description and state the particular defect. Propose a matching repair rather than claiming all graphs are misleading.

Your turn

Check your reasoning

Your answer is temporary and is not saved to an account. Download your current answer before leaving or reloading. Written work on paper or in another app stays in your own file.

Helpful tips
  • Measurements need units.
  • A cropped axis is not automatically false, but needs clear context.
Original excerpt C: Bars start at 4 rather than 0, but the axis has no break or visible scale explanation, exaggerating their apparent ratios. Use excerpt C only. Which defect is shown in the words for the supplied visual?

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

See the answer and explanation

truncated axis hides scale context

Evidence: Bars start at 4 rather than 0, but the axis has no break or visible scale explanation, exaggerating their apparent ratios. Reasoning: truncated axis hides scale context is supported because starting the bars above zero without visible context distorts their apparent comparison. A cropped axis is not automatically false, but needs clear context.

Take it further

Changed-input task: Original excerpt C: A table labels model IDs, bend counts and dates; all supplied values are included. Give an evidence-based answer before looking at the model. Expected reasoning: Evidence: A table labels model IDs, bend counts and dates; all supplied values are included. Reasoning: no listed defect is stated is supported because model labels, quantity, values and scale context are supplied. A cropped axis is not automatically false, but needs clear context. Then write a brief alternative sentence, paragraph, source note or scene that demonstrates the same operation; label new fictional details and preserve source limits.

Nothing here is saved to an account or sent to a teacher. The answer download includes your current choice and any checked feedback. It does not include choices from the separate More practice section. Download that section separately.

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. Original excerpt C: The graph shows two bars but does not identify which model either represents. Use excerpt C only. Which defect is shown in the words for the supplied visual?
Need a hint?
  • Measurements need units.
  • A cropped axis is not automatically false, but needs clear context.
2. Original excerpt C: The graph labels both models and Number of bends, starts at zero and includes all supplied values. Use excerpt C only. Which defect is shown in the words for the supplied visual?
Need a hint?
  • Measurements need units.
  • A cropped axis is not automatically false, but needs clear context.
3. Original excerpt C: Chart lists 4, 5 and 6 but does not name the quantity. Use excerpt C only. Which defect is shown in the words for the supplied visual?
Need a hint?
  • Measurements need units.
  • A cropped axis is not automatically false, but needs clear context.

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.