Language Arts · Grade 3 · Information Investigators: Non-Fiction and Research · Term 2

Author's Purpose in Informational Text

Students will identify the author's purpose (to inform, explain, describe) in various informational texts.

• Ontario Curriculum Expectations
• CCSS.ELA-LITERACY.RI.3.6

About This Topic

Grade 3 students identify the author's purpose in informational texts, such as to inform with facts, explain processes, or describe details. They analyze why authors select topics and differentiate informing from persuading by noting neutral facts versus opinion words. Students also predict how purpose influences word choice, like precise terms for explanations or vivid adjectives for descriptions. This meets curriculum expectations for reading comprehension in non-fiction.

In the Information Investigators unit, this topic builds critical thinking for research. Students connect purpose to text features, such as headings for informing or diagrams for explaining. It strengthens skills in evaluating sources and supports writing their own informational pieces with clear intent.

Active learning suits this topic well. When students sort excerpts into purpose categories or role-play authors explaining choices, they practice criteria hands-on. Pair discussions on word influences reveal patterns, while group justifications build evidence-based reasoning. These methods turn analysis into engaging practice that sticks.

Key Questions

1. Analyze why an author chose to write about a particular topic.
2. Differentiate between an author's purpose to inform and to persuade.
3. Predict how an author's purpose might influence their word choice.

Learning Objectives

• Identify the primary purpose (to inform, explain, or describe) of specific informational texts.
• Analyze how an author's choice of topic relates to their intended purpose.
• Compare and contrast texts with the purpose to inform versus the purpose to persuade, citing textual evidence.
• Predict how an author's purpose influences their selection of vocabulary and text features.

Before You Start

Identifying Main Idea and Supporting Details

Why: Students need to be able to find the main point of a text and the details that support it to understand what the author is trying to convey.

Recognizing Text Features

Why: Understanding how headings, subheadings, and captions work helps students identify the focus and purpose of different sections within an informational text.

Key Vocabulary

Author's Purpose	The main reason an author decides to write a piece of text. For informational texts, this is often to inform, explain, or describe.
Inform	To give facts or information about a topic. Texts that inform present neutral, objective details.
Explain	To make something clear or understandable, often by detailing steps in a process or providing reasons.
Describe	To give details about the appearance, nature, or characteristics of something or someone.
Persuade	To convince someone to believe or do something. This often involves opinions or arguments, unlike texts that solely inform.

Watch Out for These Misconceptions

Common Misconception

All non-fiction texts aim only to inform with facts.

What to Teach Instead

Informational texts can explain how things work or describe features using specific structures like steps or adjectives. Sorting activities help students compare texts side-by-side, spotting differences in organization and language through group talk.

Common Misconception

Persuading is the same as informing because both use facts.

What to Teach Instead

Persuasion includes opinions to convince, while informing sticks to neutral facts. Role-playing authors lets students test opinion words versus facts, with peer debates clarifying the distinction in real-time.

Common Misconception

Author's purpose never changes word choice.

What to Teach Instead

Purpose shapes words, like commands in explanations or sensory details in descriptions. Prediction games where students match words to purposes build this link, as groups experiment and refine choices collaboratively.

Active Learning Ideas

Sorting Stations: Purpose Categories

Prepare stations with short excerpts from informational texts. Groups rotate through stations to sort texts into bins labeled 'inform,' 'explain,' 'describe,' or 'persuade,' then write one sentence justifying each sort. End with a whole-class share-out of tricky examples.

45 min·Small Groups

Author Detective Pairs: Clue Hunt

Pairs receive a text and a checklist of purpose clues, like fact lists or opinion words. They highlight evidence and vote on the main purpose, then swap texts with another pair for peer review. Discuss findings as a class.

30 min·Pairs

Word Choice Role-Play: Purpose Predictions

In small groups, students draw a purpose card and topic, then brainstorm five words they would use. They perform a short skit reading their text aloud. Class guesses the purpose based on word choices.

40 min·Small Groups

Mini-Poster Challenge: Individual Creation

Students select an informational text, identify its purpose, and create a poster showing evidence like key words and structures. They present to partners for feedback before displaying.

50 min·Individual

Real-World Connections

• Museum curators often write exhibit descriptions to inform visitors about historical artifacts, explaining their significance and describing their appearance.
• Science journalists write articles to explain complex scientific discoveries to the public, using clear language and diagrams to make the information accessible.
• Travel guides describe destinations, providing details about sights, sounds, and experiences to help potential tourists decide where to visit.

Assessment Ideas

Quick Check

Provide students with three short text excerpts, each with a different author's purpose (inform, explain, describe). Ask students to label each excerpt with its primary purpose and write one sentence explaining their choice, referencing specific words or phrases from the text.

Discussion Prompt

Present students with a short informational article about a local park. Ask: 'Why do you think the author wrote this article? What clues in the text helped you decide? If the author wanted to persuade people to visit, how might they have changed their word choices?'

Exit Ticket

Give students a graphic organizer with three columns: Inform, Explain, Describe. Provide a list of 5-6 sentences or short phrases found in informational texts. Students must place each item into the correct column based on the author's likely purpose for including it.

Frequently Asked Questions

How to teach author's purpose in grade 3 informational texts?

Start with familiar texts like animal facts or how-to guides. Use color-coding for clues: green for facts (inform), blue for steps (explain), yellow for details (describe). Follow with sorting tasks and discussions to practice. This scaffolds analysis before independent reading, aligning with Ontario curriculum goals for RI.3.6.

Difference between inform and persuade in kid texts?

Informational texts to inform give facts without pushing views, like 'bears eat berries.' Persuasive ones urge action with opinions, such as 'bears need our help most.' Teach by contrasting paired texts on the same topic. Students chart differences in word choice during partner reviews to solidify understanding.

How can active learning help students grasp author's purpose?

Active methods like text sorting stations or role-plays make purpose detection interactive. Students physically manipulate excerpts, justify in groups, and predict words, turning passive reading into skill-building. Peer feedback during shares uncovers nuances, boosting retention over worksheets. This approach fits Grade 3 attention spans and curriculum emphasis on comprehension.

Activities to predict word choice by purpose?

Use card games where students draw purposes and topics, then select words from banks to build sentences. Groups vote and explain fits, like action verbs for explanations. Extend to writing mini-texts. These predict-and-test steps reinforce how intent drives language, preparing for research writing.