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Controlling Idea Expository
Transcript of Controlling Idea Expository
and Specific Purpose in Expository Text
The controlling idea of a piece of
nonfiction is the big idea the author is
is writing about. It is the main idea
the writer wants to
communicate to his or her reader.
Authors have many purposes when they write
inform - provide information about the topic
explain - give reasons why something happened or show how something works
persuade - convince readers of the truth of something or influence them in some way
express - share strong emotions or feelings about something
describe - show how something looks or what it is like
entertain - amuse readers by telling about something humorous
Each main idea or topic
sentence is backed up by
facts, details, reasons,
and even expert
The main purpose of expository writing is to give information or explain something.
Usually the author presents the controlling idea
in the introduction of the article.
Then the author presents the main points that develop this idea in paragraphs . Each paragraph has its own main idea that often is expressed in a topic sentence.
What the article is about
overall idea about the topic that expresses the
idea of a
sentence that expresses the main idea of a paragraph
facts, details, examples, expert opinions
that back up the main idea
When you read expository text, ask yourself:
What is the controlling idea that the author wants to communicate?
What main ideas does the author use to develop this controlling idea?
What information does the author use to support the main ideas in paragraphs?
When I add it all together, do I think the author did a good job of achieving the purpose?