English Language Arts · 12th Grade · The Research Inquiry · Weeks 19-27

Writing the Introduction and Conclusion

Focus on crafting compelling introductions that hook the reader and effective conclusions that synthesize arguments.

• Common Core State Standards
• CCSS.ELA-Literacy.W.11-12.1
• CCSS.ELA-Literacy.W.11-12.4

About This Topic

The introduction and conclusion are the architectural bookends of a research paper, and they are often the weakest sections in student writing. CCSS W.11-12.1 asks students to introduce a claim with precision and maintain a focus throughout the argument, and W.11-12.4 asks for writing appropriate to the task and purpose. An effective introduction does three specific jobs: it establishes the context that makes the research question meaningful, it identifies the gap or problem the paper addresses, and it presents a thesis that is specific, arguable, and scoped to what the paper actually delivers.

The conclusion presents the inverse challenge. Students frequently summarize the paper's paragraphs rather than synthesizing the argument , restating what was said rather than reflecting on what has been established and why it matters. A strong conclusion moves from synthesis (this is what the evidence collectively shows) to significance (this is why it matters and what questions remain), which requires higher-order thinking that many students have not been explicitly taught.

Teaching these sections through active analysis of published models is more effective than describing them abstractly. When students reverse-engineer the moves a professional writer makes in an introduction or conclusion, they gain a transferable toolkit rather than a template that produces formulaic writing.

Key Questions

1. Design an introduction that effectively establishes context and presents a clear thesis.
2. Construct a conclusion that synthesizes main arguments without introducing new information.
3. Evaluate different strategies for opening and closing a research paper.

Learning Objectives

• Analyze published research introductions to identify strategies for establishing context, identifying a research gap, and presenting a thesis.
• Synthesize the main arguments of a research paper into a concluding paragraph that reflects on significance without introducing new evidence.
• Evaluate the effectiveness of different opening hooks and closing statements in research papers based on established criteria.
• Create a compelling introduction and a synthesized conclusion for a research paper that adheres to academic conventions.

Before You Start

Developing a Research Question and Thesis

Why: Students need a clear thesis statement and a defined research question to effectively frame their introduction and conclusion.

Gathering and Citing Evidence

Why: Understanding how to use evidence to support claims is fundamental to synthesizing arguments in the conclusion and establishing the need for research in the introduction.

Key Vocabulary

Thesis Statement	A concise sentence, usually at the end of the introduction, that clearly states the main argument or purpose of the research paper.
Context	The background information and relevant details that help the reader understand the significance and scope of the research topic.
Research Gap	An unanswered question or an area of inquiry that has not been fully explored in existing research, which the current paper aims to address.
Synthesis	The process of combining different ideas, evidence, or arguments from the body of the paper to form a coherent and unified conclusion about the main points.
Hook	An engaging opening sentence or phrase in an introduction designed to capture the reader's attention and interest in the topic.

Watch Out for These Misconceptions

Common Misconception

A good introduction starts with a general statement about the topic before narrowing to the thesis.

What to Teach Instead

The 'funnel' approach often produces openings so vague they fail to establish why this particular question matters. Effective introductions often begin with a specific point of entry: a precise question, a surprising finding, or a specific gap in existing understanding. Students benefit from studying actual published introductions to see the range of strategies writers use.

Common Misconception

The conclusion should summarize the main points of the paper.

What to Teach Instead

Summary (repeating what was said) and synthesis (drawing a larger point from what was said) are different cognitive operations. A conclusion that only summarizes misses the opportunity to show what the argument collectively establishes and why it matters. Students who practice the distinction through side-by-side comparison of summary and synthesis examples develop a clearer sense of what conclusions should accomplish.

Common Misconception

The thesis statement needs to be the last sentence of the introduction.

What to Teach Instead

Thesis placement depends on the writer's rhetorical strategy. In some papers, presenting the thesis early orients the reader; in others, building to the thesis after establishing context is more effective. What matters is that the thesis is clear and appropriately scoped, not that it occupies a fixed position in the paragraph.

Active Learning Ideas

Introduction Reverse-Engineering

Provide three published introductions from academic essays or long-form journalism on different topics. Students individually annotate each for: the hook or opening move, the contextualizing background, the identification of the problem or gap, and the thesis. In small groups, they compare annotations and discuss whether all four moves were present and equally effective. Groups then draft a one-sentence description of the 'formula' the writer used.

30 min·Small Groups

Think-Pair-Share: Summary vs. Synthesis

Provide two versions of a conclusion for the same paper: one that lists what each body paragraph said (summary) and one that draws a larger point from the combined evidence and identifies an implication (synthesis). Students individually identify the difference, then discuss with a partner what specific moves the synthesis version made that the summary did not. Whole-class debrief produces a shared definition of synthesis.

20 min·Pairs

Hook Workshop: Openings That Work

Students individually draft three possible opening sentences for their own research paper using three different strategies: a relevant statistic or finding, a specific illustrative scenario, and a direct statement of the problem or question. In small groups, they read each opening aloud and get immediate audience reaction: which created the most compelling reason to keep reading? Students choose one to develop into a full introduction.

25 min·Small Groups

Conclusion Rebuild

Provide a weak conclusion (summary-only, ending abruptly, or introducing new information) and ask students to rewrite it in pairs. The revision must: synthesize the argument in a single sentence, connect the findings to a broader significance, and close without introducing new evidence. Pairs share rewrites and class votes on which best achieves all three goals.

25 min·Pairs

Real-World Connections

• Journalists writing feature articles must craft compelling introductions to draw readers into complex stories and provide concise conclusions that summarize key takeaways for busy audiences.
• Policy analysts preparing reports for government agencies or think tanks must write introductions that clearly define the problem and its context, and conclusions that synthesize findings and recommend actions.

Assessment Ideas

Quick Check

Provide students with two different introductions for the same research topic. Ask them to identify which introduction better establishes context and presents a clear thesis, and to explain their reasoning in 2-3 sentences.

Peer Assessment

Students exchange drafts of their research paper conclusions. Each student will read their partner's conclusion and answer: Does this conclusion synthesize the main arguments? Does it avoid introducing new information? Provide one specific suggestion for improvement.

Exit Ticket

Ask students to write one sentence that could serve as a hook for a research paper on a given topic, and one sentence that synthesizes a hypothetical argument about that topic.

Frequently Asked Questions

How do I teach students to write introductions that do more than define terms and state the topic?

Teach the introduction as doing three jobs: establishing context, identifying the problem or gap, and presenting the thesis. Have students analyze published introductions to see where each job is done. Then ask them to draft an introduction that completes all three tasks, checking it against the model. This gives them a functional framework rather than a form to fill in.

What is the difference between a summary conclusion and a synthesis conclusion?

A summary conclusion restates what each section said: 'In paragraph one, I showed... In paragraph two, I argued...' A synthesis conclusion draws a larger point from the combined evidence: 'Taken together, these findings suggest... This matters because...' The synthesis asks what the argument has collectively established and why that matters, which requires thinking beyond the paragraph level.

How do I help students avoid introducing new information in the conclusion?

Teach students that every claim in the conclusion needs to be already proven by the body of the paper. If they feel the urge to add new evidence in the conclusion, that is a signal that either the body paragraph was incomplete or they have discovered a new argument that should become its own section. The conclusion is not a place to compensate for incomplete body paragraphs.

How does active learning help students write stronger introductions and conclusions?

Students learn these sections best by studying how published writers handle them and by drafting multiple versions with immediate peer feedback. Active approaches like reverse-engineering published introductions, workshop-based hook drafting, and conclusion rebuild exercises provide the low-stakes repetition that builds facility. Students who practice three different opening strategies in one class period are better prepared to write a strong introduction on their own than students who receive only one model.