Key Ideas and Details
Reading questions test explicit details, main ideas, summaries, sequence, relationships, and reasonable inferences from literary and informational passages.
How to study for the ACT
Build every answer around the exact section task: revise clearly, calculate with units, read closely, interpret data, and compare scientific explanations.
Core concepts
Concept 1
Key Ideas and Details questions reward careful use of the passage, sentence, data display, formula, or experiment setup.
Exam cue: Identify the section skill before reading the choices.
Concept 2
The best answer fits the exact ACT task and avoids extra assumptions.
Exam cue: Check context, evidence, units, graph labels, and the wording of the question.
Concept 3
Use elimination against choices that are partly true but not responsive to the question.
Exam cue: Confirm that the answer solves the asked problem rather than a nearby one.
Risk pitfalls and guardrails
Choosing a familiar rule that does not fit the item.
Guardrail: Avoid answers that change meaning, skip units, ignore passage evidence, overstate data, mix up variables, or answer a nearby task.
Ignoring the passage, graph, unit, or sentence context.
Guardrail: Avoid answers that change meaning, skip units, ignore passage evidence, overstate data, mix up variables, or answer a nearby task.
Letting speed override the exact wording of the question.
Guardrail: Avoid answers that change meaning, skip units, ignore passage evidence, overstate data, mix up variables, or answer a nearby task.
Memory anchors
Main Idea
The main idea states the passage's central point.
Explicit Detail
An explicit detail is directly stated in the passage.
Reasonable Inference
A reasonable inference follows from passage evidence without speculation.
Summary
A summary captures the main point and key support without adding new claims.
Sequence
Sequence questions ask the order of events, ideas, or steps.
Cause Effect
Cause/effect relationships connect reasons and results.
Character Motive
Character motive explains why a person acts or speaks.
Evidence Line
Evidence lines should be read in context.
Detail Trap
A true detail can still be too narrow or irrelevant.
Passage Boundary
Reading answers must stay within what the passage supports.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
Read the passage. At first, Tomas visited the rooftop at dusk only to water the tomato plants. Gradually, he began arriving early enough to watch swifts circle above the chimneys. By August, his notebook contained more observations of birds than of vegetables. The passage mainly shows Tomas
Read the passage. The village's old well had been covered for decades. When drought lowered the reservoir, residents reopened it, tested the water, and installed a hand pump. The well could not meet every need, but it supplied enough water for the clinic and school. Which statement best summarizes the passage?
Answer all questions to submit.
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