ACER Humanities main idea questions

The main idea is the point that holds a text together. Every paragraph supports it in some way: details explain it, give examples of it or add a step to it.

Main idea questions take a few forms. Some ask about the whole passage, some about a named paragraph, some for the right heading, and some for the point a writer or a group of people is making. Each needs your child to judge the size of an idea, not just find it.

Start with labels, because they make the thread visible. Your child can't judge the size of an option until they can see the shape of the whole text.

It's tempting to assume the last paragraph sums up the text. In a well-made Humanities passage, the ending can add a turn instead: a modern use, a complaint, a twist. An option that matches the ending closely can feel right and still miss most of the passage.

The opening can mislead in the same way. A first paragraph may set the scene without stating the point, so your child needs the whole passage in view before choosing.

These go with an article we wrote about the windcatcher towers of an old desert city in Iran, and why architects are studying them again. The first question is about the whole passage; the rest zoom in on particular paragraphs. Each one shows the answer and the working, so read them together.

Each wrong option here is the wrong size or points the wrong way. As you read the working, ask which trap each wrong option sets.

• The memorable detail. Families resting in a cool underground room on the hottest afternoons sticks in the mind, but it is a detail. The paragraph is about cooling the air.
• Part of the passage. An option about air conditioners harming cities comes from the last paragraph only. It leaves out how the towers work, which is most of the text.
• The exaggeration. "Most of the summer" for "the hottest afternoons"; "should be banned" for a downside the writer only mentions. Watch for options that make the text's claim bigger.
• The opposite. An option can match the passage's mood and still contradict a sentence. The writer admits the new shafts rarely cool as much as a machine, so an option saying they cool better is wrong.

Knowing the main idea makes other questions easier. A question about why a writer includes a detail is answered by asking how that detail serves the main idea; the tone and purpose page shows this. In a poem, the main idea may be the feeling the ending lands on.

It helps in Written Expression too. A child who can find the thread in someone else's writing finds it easier to keep a thread in their own.

Early on, it's tempting to pick the option with the most familiar words. As the skill grows, your child starts rejecting options as "too small" or "too big" and can say why. That language is a good sign: your child is judging the size of an idea, which is the whole skill.

Practice test 1 mixes main idea questions with every other kind on ACER's time. Its results by skill show main idea separately, so you can see whether it improves from test to test.

Try a headline game. After your child reads a news article or a chapter of a non-fiction book, ask for a short headline. Then ask which paragraph the headline leaves out.

If it leaves any out, it is too small; if it promises more than the article gives, it is too big.

Non-fiction works well, because articles are built around a point. ACER's advice is to read widely and think critically. Science, history and geography articles each give practice at finding the thread, and for Humanities texts no specialist knowledge is assumed, so the topic itself never needs studying.

The app's main idea lesson comes in an Interactive version and as Notes, and skill drills give short sets on this skill. For questions about what a text suggests rather than states, see inference; every kind is on the Humanities sample questions page.