Reading Informational Text
Reading Informational Text tests how well you follow an author's reasoning. Grade 8 items ask you to state a central idea and show which details develop it, judge whether a summary is objective, explain how ideas are introduced and refined across paragraphs, and evaluate whether an argument's claims are supported by relevant and sufficient evidence. You may also be asked to compare a text with a different medium, distinguish a source's point of view from the facts it reports, or decide which of two sources better supports a claim.
Central idea versus topic
The topic is what the text is about ("urban tree cover"). The central idea is the point the author makes about it ("planting street trees lowers summer temperatures in dense neighborhoods"). Section-level ideas support that whole. A good summary names the central idea, includes the key supporting points, and leaves out examples, anecdotes, and the author's opinions unless they drive the argument.
Tracing an argument
- Identify the claim - what the author wants you to accept.
- Identify the reasons and the evidence attached to each (statistics, expert testimony, case study, anecdote).
- Check relevance (does it bear on this claim?) and sufficiency (is one anecdote enough for a broad conclusion?).
- Notice counterclaims: a strong argument acknowledges them and answers them.
- Separate fact from interpretation: "the city measured a 3.8-degree drop" is data; "this proves the program is a triumph" is evaluation.
Worked example
Text: "After the city added 300 street trees to the East Ward, average July surface temperatures there fell by 3.8°C. A neighborhood group calls the program a success. However, the same summer was the coolest in a decade, and a parking garage opened in the ward that June."
Question: Which statement best evaluates the group's conclusion? A) The evidence is irrelevant. B) The evidence is insufficient because other factors could explain the drop. C) The claim is false. D) The author supports the program.
Reasoning: Temperature data is relevant, so A is wrong. Nothing proves the program failed, so C overstates. The author reports rival explanations - weather and the new garage - which shows the evidence is confounded. That is B. D describes the author's tone, not the evaluation the question asks for.
Traps
- Choosing a true statement that does not answer the question asked.
- Calling a summary objective when it adds praise or blame.
- Mistaking a vivid supporting detail for the central idea.
- Accepting a single anecdote as proof of a general claim.