A main idea question asks what a paragraph or passage is mostly about; the right option covers all of it. These come up in the 30-minute Reading Comprehension test, at your child's year level on their school's date .
It asks what a piece of text is mostly about: the point every sentence in it supports. The question can be about one paragraph or the whole passage, so check which before reading the options.
What makes it hard is that the options come from the passage. The wrong ones aren't false; they're the wrong size. One is a single detail, one stretches the point further than the writer does, and one belongs to a different paragraph.
Seeing the whole is part of what Edutest calls interpreting a passage . It's the same skill your child uses to choose a title or sum up a chapter.
The wording changes, but the job stays the same: find the statement that fits all of the text in question. The table shows what to check for each wording.
Heading questions can surprise a child who expects a full sentence. A heading is a main idea in a few words, so the same test applies.
Ways a main idea question is asked
Wording
What it covers
What to check
What is the main idea of the second paragraph?
One paragraph
Does every sentence in it support the option?
Which sentence best sums up …?
One paragraph or section
Is anything important left out?
Which heading would best suit …?
One paragraph
Would the heading still fit if one example were removed?
What is the main idea of the whole passage?
Every paragraph
Does it fit the beginning, middle and end?
How does your child pin down the main idea?
Sum up first and read the options second. A summary in your child's own words gives them something to measure each option against, so a vivid detail can't pull them off course.
Sum up each paragraph in a few words
'Fences and signs didn't stop the tracks.' A short label per paragraph is enough.
Look for what the labels share
For a whole-passage question, the main idea joins the labels together.
Sort the options by size
Too small: one detail. Too big: always, all, best. Off target: another paragraph.
Choose the one that fits everything
The right option can look less dramatic than the wrong ones, and it covers more.
Give openings and endings a second look. A writer may state the point near the start of a paragraph, or return to it in the last sentence of the passage.
What do Edutest main idea questions look like?
All four use one information passage about the tracks people wear across grass, moving from single paragraphs to the whole passage. Each one shows the answer and the working. Read them with your child, and have your child write a short label for each paragraph first.
Paths Nobody Planned
Paths Nobody Planned
Almost every park has one: a thin brown line worn across the grass where people have walked, again and again, instead of using the paved path. Planners call these tracks "desire lines". They appear wherever the official path makes people go the long way round: around a corner, past a flower bed, or away from the gate they actually want to reach.
For a long time, desire lines were treated as a nuisance. Councils put up low fences, planted prickly hedges or added signs asking people to keep off the grass. Often the fences were stepped over and the signs ignored, and within a few weeks a fresh line had appeared beside the hedge.
Some designers now see desire lines differently. Instead of fighting them, they study them. A few have even opened new parks or school grounds with no paths at all. They wait for several months, watch where the grass wears thin, and then pave those exact routes. The result is a set of paths that people are happy to use, because they are the paths people had already chosen.
Desire lines can also show what a place is missing. A track leading to a gap in a fence may mean that a gate is needed there. A line that curves around the same patch of grass every winter may show where the ground stays soggy because a drain is blocked.
A worn strip of grass might look like damage. Read carefully, though, it is a message from the people who use a place, telling planners exactly what they need.
Worked explanation 1
What is the main idea of the second paragraph?
AA.
Prickly hedges are the best way to protect grass.
BB.
Most people obey signs asking them to keep off the grass.
CC.
Desire lines appear only beside fences and hedges.
DD.
Early attempts to stop desire lines often did not work.
Answer: D
Answer: D (Early attempts to stop desire lines often did not work.)
The paragraph lists what councils tried (fences, hedges, signs) and then says the fences were stepped over, the signs ignored, and a new line appeared. Every sentence builds to the same point: these attempts failed. The answer is D.
The trap: A picks out one detail from the paragraph. A main idea has to cover the whole paragraph, and the paragraph shows that hedges did not work either.
Why the other options are wrong
A (Prickly hedges are the best way to protect grass.): Only one detail, and a fresh line still appeared beside the hedge.
B (Most people obey signs asking them to keep off the grass.): The paragraph says the signs were ignored.
C (Desire lines appear only beside fences and hedges.): A new line formed beside a hedge, but the passage never says 'only'.
Worked explanation 2
Which sentence best sums up the third paragraph?
AA.
Most new parks are now opened with no paths at all.
BB.
Some designers let people's walking decide where paths go.
CC.
Grass grows back quickly once people stop walking on it.
DD.
Paths last longer when they follow routes people already use.
Answer: B
Answer: B (Some designers let people's walking decide where paths go.)
The paragraph says some designers study desire lines instead of fighting them, wait to see where the grass wears thin, and then pave those routes. In short, the walkers choose the paths. The answer is B.
The trap: D tempts because it sounds like a sensible result of the plan. But the paragraph only says people are happy to use these paths; it says nothing about how long they last.
Why the other options are wrong
A (Most new parks are now opened with no paths at all.): Only 'a few' designers do this, and those parks get paths in the end.
C (Grass grows back quickly once people stop walking on it.): Grass growing back is never mentioned.
D (Paths last longer when they follow routes people already use.): The paragraph says people are happy to use the paths, not that they last longer.
Worked explanation 3
Which heading would best suit the fourth paragraph?
AA.
Clues to Hidden Problems
BB.
How to Unblock a Drain
CC.
Why Fences Do Not Work
DD.
Waiting Before Paving
Answer: A
Answer: A (Clues to Hidden Problems)
The paragraph opens by saying desire lines 'show what a place is missing', then gives two examples: a missing gate and a blocked drain. Both are problems the tracks reveal. The answer is A.
The trap: B tempts because the drain is the last and most specific example. But the paragraph never explains how to fix a drain; the drain is just one clue.
Why the other options are wrong
B (How to Unblock a Drain): The drain is one example; the paragraph gives no instructions for fixing it.
C (Why Fences Do Not Work): Fences are the topic of the second paragraph.
D (Waiting Before Paving): Waiting before paving belongs to the third paragraph.
Worked explanation 4
Which sentence best states the main idea of the whole passage?
AA.
Councils were wrong to try to stop people walking on the grass.
BB.
Many designers now open parks with no paths and pave them later.
CC.
Worn tracks across grass can show planners what people need from a place.
DD.
Paths made by walkers are always better than paths drawn by planners.
Answer: C
Answer: C (Worn tracks across grass can show planners what people need from a place.)
A main idea must cover the whole passage, not one part. Paragraph 1 explains desire lines, paragraph 2 shows that fighting them failed, paragraphs 3 and 4 show how they can guide new paths and reveal problems, and the last sentence calls them 'a message' to planners. Only C covers all of this. The answer is C.
The trap: A tempts because the second paragraph shows councils' fences and signs failing. But that is only one paragraph, and the writer never says councils were wrong; the passage moves on to how desire lines can help.
Why the other options are wrong
A (Councils were wrong to try to stop people walking on the grass.): Only the second paragraph, and the writer never says councils were 'wrong'.
B (Many designers now open parks with no paths and pave them later.): Only the third paragraph, and the passage says 'a few', not many.
D (Paths made by walkers are always better than paths drawn by planners.): 'Always' goes beyond what the passage claims.
Put your child's labels beside the wrong options. Ask whether each one is too small, too big or from another paragraph; naming the size is the skill.
What traps should your child watch for?
Every trap here is an option of the wrong size. As you go through the working, ask which part of the passage each wrong option leaves out, and the trap becomes clear.
The striking detail. Prickly hedges or a blocked drain stick in the mind, but each is one example. A main idea has to cover the examples, not be one of them.
The strong word. "Always", "most", "best" and "wrong" turn a fair point into a bigger claim than the passage makes. The passage says a few designers wait before paving, so "many" is wrong.
The right idea from the wrong paragraph. A heading about fences may be true of the passage, but it belongs to another paragraph than the one asked about.
The sensible result the writer never states. "Paths last longer" sounds like it follows, but the paragraph only says people are happy to use them.
How does main idea connect to other questions?
Main idea is where the other reading skills come together. Your child needs retrieval to check that an option is in the passage, and inference when the point is suggested rather than stated, as it can be in a story.
In a story, look for a change or a lesson rather than a topic. In an information text, it's the point the writer wants the reader to take away. Asking "what does the writer want me to understand?" works for both.
Main idea links to writing too. A child who can sum up a paragraph in a sentence will find it easier to plan their own paragraphs in Written Expression, where each paragraph needs a clear point.
How can your child practise main idea?
Ask for headlines. After your child reads a news article or an information page, ask for a headline of no more than a handful of words, then compare it with the real one. Ask what their headline leaves out.
For stories, ask "What is this chapter really about?" and push past the plot: not "she went to the pottery class" but "she learnt to stop fighting the clay".
Four questions show the method; a full Reading Comprehension test shows whether your child still sums up first when the clock is running. Practice test 1 gives results by skill, so you'll know whether main idea needs more time.
The app's main idea lesson has an Interactive version and Notes. Main idea sits with the other kinds on the Reading Comprehension sample questions page; the clues behind suggested points are on the inference page.
See where your child stands
Practice test 1 marks every answer and shows results by skill: what your child already does well and the three skills to work on next.
Sample
Practise for the real test
Practice test 1 is free. Then packs from A$109 for 12 months, or A$9 a week, per exam.
