Examining Author's Purpose in a Nonfiction Text

Explicit Instruction/Teacher modeling

• Write the following on the board:
  • The Author's Purpose for Writing a Nonfiction Book or Text:
    1. To explain or inform
    2. To teach how to do something
    3. To persuade
    4. To entertain
• Explain to students that the author's purpose for writing a nonfiction book or text is what they want the reader to gain from reading their book or text.
• Bring out a nonfiction book that teaches how to do something (e.g. how to make cookies or cook a pizza). Explain that this particular book was written to teach you how to do something.
• Explain to students that some nonfiction books or texts are written to teach us about a topic, some are written to persuade, or convince, the reader to believe what the author believes, and some are just written to entertain, or engage, the reader!
• Tell the students that today they will be reading a short nonfiction text about oceans.
• Ask students to predict what the author's purpose will be for writing a text about oceans. Read each purpose separately and ask students to raise their hand when they hear the author's purpose they believe the ocean text was created for. Mark tallies next to each purpose on the board, and review which purpose has the most tallies and the least tallies.

Guided Practice

• Project The Ocean worksheet on the board and pass out copies to each student. Call on a student volunteer to read the directions at the top of the page.
• Ask students to look at the picture included on The Ocean worksheet. Call on a student to offer an idea about the topic of the text, explaining that the topic is a word or phrase that explains what the text is about. Clarify that the topic of this text is the ocean.
• Read the first paragraph aloud and bring attention to the bolded words in the text. Explain to students that authors often include vocabulary words that help support the main idea of the text. Define main idea in student-friendly language by explaining that the main idea is what the author wants the reader to learn about. Explain to students that the main idea is usually a sentence within the text. Underline the first sentence of the text, and explain that this is the main idea of the text: The ocean is important to all living things. Have the students underline the main idea on their copies of The Ocean worksheet.
• Continue reading the text aloud and call on student volunteers to help you.
• Bring the students' attention to the bottom of the page and read the sentence frames aloud. Model filling in the first sentence frame by inserting the word "percent." Using an online dictionary, look up the word percent and write down the definition on the worksheet. Next, ask the students why the author included the word percent twice in the text. How does the word percent support the main idea of the text? Allow a couple students to share out.
• Reinforce that the author included the word percent to help the reader visualize and understand how much of the Earth is covered by ocean. The author wants the reader to understand that the ocean is important to all living things. The author also wants to help the reader understand that there is still more ocean left to explore.
• Model recording your answer using the sentence starter on number one.
• Pass out dictionaries or tablets with access to an online dictionary, and split the students into partners. Ask students to finish filling out the sentences for numbers 2–3 on their worksheet with their partners.

Independent working time

• Have students go back to their seats and finish numbers 4–5 on their worksheet independently.