Combine sources without erasing their limits

Supplied materials

• Original fictional Source A: “After a new revision club’s first session, 18 of 24 attendees said the session felt useful. Only attendees answered the survey.”
• Original fictional Source B: “The club has not yet collected before-and-after knowledge checks, and attendance was voluntary.”
• Draft claim to evaluate: “The club has proved it raises every student’s exam scores.”

Learn the idea

Synthesis combines what sources establish and explains how the pieces relate. Source A concerns attendees’ reported experience; Source B identifies outcomes and comparisons not yet measured. These sources can both be accurate.

Match a claim’s strength to its evidence. Positive feedback supports a statement about surveyed attendees, not a score improvement, every student’s experience or an isolated causal effect.

1. Label the measurement in Source A.
2. List the evidence missing according to Source B.
3. Underline each unsupported part of the draft claim.
4. Write a two-sentence synthesis containing one finding and one limit.

Check your reasoning

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Take it further

Add a fictional knowledge check showing an average rise from 5 to 7 out of 10 among attendees. Explain why, without a comparison, a change still does not isolate the club’s causal effect.

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