Building Complex Sentences

Lesson Plan Overview

This five-lesson unit focuses on teaching Year 5 students in Australia how to write complex sentences. Aligned with the Australian Curriculum: Languages – English (AC9E5LA08), this unit enhances students' understanding of clauses, conjunctions, and sentence structures while engaging them in fun, context-rich activities.

Lesson Outline

Each lesson runs for 30 minutes and is designed for a class of 25 students.

• Lesson 1: The Power of Complex Sentences
• Lesson 2: Introducing Subordinating Conjunctions
• Lesson 3: Expanding Ideas with Dependent Clauses
• Lesson 4: Avoiding Run-on Sentences & Fragments
• Lesson 5: Creative Writing Challenge

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Lesson 1: The Power of Complex Sentences

Lesson Objectives

By the end of this lesson, students will:

• Understand what a complex sentence is.
• Identify independent and dependent clauses.
• Recognise how complex sentences add depth to writing.

Curriculum Link

AC9E5LA08 – Understand how complex sentences build meaning in texts by combining a main idea with supporting clauses.

Materials Needed

• Whiteboard & markers
• Sentence strips (pre-written clauses)
• "Sentence-Builders" worksheet
• Timer

Lesson Breakdown

1. Warm-Up (5 mins) – Sentence Sort Game

Write a mix of simple, compound, and complex sentences on the board and ask students to identify which ones are complex. Encourage them to explain why.

2. Explicit Teaching (10 mins) – What Makes a Sentence Complex?

• Explain that every complex sentence has two parts:
  1. Independent clause: Can stand alone (e.g., I stayed inside).
  2. Dependent clause: Needs more information (e.g., because it was raining).
• Show examples:
  • I stayed inside because it was raining.
  • Although I was tired, I finished my homework.
• Explain how the order of clauses can change but still make sense.

3. Group Activity (10 mins) – Build-a-Sentence Race

• Hand out sentence strips with independent and dependent clauses.
• In pairs, students must match them to make correct complex sentences.
• Each pair reads their sentence aloud to the class.

4. Wrap-Up (5 mins) – Think, Pair, Share

• Ask: Why do writers use complex sentences?
• Have students share one reason with a partner, then discuss as a class.

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Lesson 2: Introducing Subordinating Conjunctions

Lesson Objectives

By the end of this lesson, students will:

• Identify subordinating conjunctions.
• Use conjunctions to join clauses into complex sentences.

Curriculum Link

AC9E5LA08 – Identify how subordinating conjunctions link ideas to build meaning in written texts.

Materials Needed

• Conjunction cards
• "Conjunction Challenge" worksheet
• Mini whiteboards

Lesson Breakdown

1. Warm-Up (5 mins) – Rapid-Fire Conjunctions

• Write because, although, when, since, unless, if on the board.
• Ask: What is the job of these words?
• Give students two minutes to come up with a sentence using one of them.

2. Explicit Teaching (10 mins) – What Are Subordinating Conjunctions?

• Explain that subordinating conjunctions link independent and dependent clauses.
• Showcase examples, highlighting conjunctions in different positions:
  • Although it was late, we continued playing.
  • We continued playing although it was late.

3. Small Group Activity (10 mins) – Conjunction Challenge

• Divide students into small groups and give each group a conjunction card.
• Each group must create and write three complex sentences using that conjunction on their mini whiteboards.
• Groups share their sentences with the class.

4. Wrap-Up (5 mins) – Pair & Share

• Students swap sentences with a partner and check if they make sense.
• Brief class discussion: What happens if we remove the conjunction?

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Lesson 3: Expanding Ideas with Dependent Clauses

Lesson Objectives

By the end of this lesson, students will:

• Write complex sentences that expand ideas.
• Recognise different types of dependent clauses.

Curriculum Link

AC9E5LA08 – Explore how dependent clauses add description, reasoning, or conditions to sentences.

Materials Needed

• A short paragraph with mostly simple sentences
• "Stretch the Sentence" worksheet

Lesson Breakdown

1. Warm-Up (5 mins) – Sentence Expansion Challenge

• Provide a basic simple sentence (e.g., The dog ran).
• Ask: How can we make it more interesting?
• Guide students to add a dependent clause.

2. Explicit Teaching (10 mins) – Different Types of Clauses

• Introduce: Reason ("because"), Condition ("if"), Contrast ("although") clauses.
• Work through examples together on the board.

3. Solo Writing Activity (10 mins) – Stretch the Sentence

• Hand out a basic paragraph and have students rewrite it, adding complex sentences.
• Share a few rewritten examples with the class.

4. Wrap-Up (5 mins) – Self-Assessment

Students underline one dependent clause and circle the subordinating conjunction in their work.

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Lesson 4: Avoiding Run-on Sentences & Fragments

Lesson Objectives

By the end of this lesson, students will:

• Learn to avoid sentence fragments and run-on sentences.
• Edit their own writing for correct sentence structure.

Curriculum Link

AC9E5LA08 – Recognise how sentence boundaries impact meaning.

Materials Needed

• "Fix the Sentence" worksheet

Lesson Breakdown

• Warm-Up (5 mins) – Spot the Errors (teacher provides examples).
• Explicit Teaching (10 mins) – How to fix fragments and run-ons.
• Pair Editing Activity (10 mins) – Swap and correct sentences.
• Wrap-Up (5 mins) – Quick quiz on correct sentence structures.

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Lesson 5: Creative Writing Challenge

Lesson Objectives

By the end of this lesson, students will:

• Independently write a paragraph using complex sentences.
• Edit writing for clarity and variety.

Curriculum Link

AC9E5LA08 – Apply knowledge of sentence structure in creative writing.

Materials Needed

• Writing prompt cards

Lesson Breakdown

1. Warm-Up (5 mins) – Sentence-building race.
2. Writing Challenge (15 mins) – Students write a short story with at least five complex sentences.
3. Peer Review (5 mins) – Swap and highlight dependent clauses.
4. Wrap-Up (5 mins) – Class share.

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Assessment & Reflection

At the end of the five lessons:
✅ Students write a one-paragraph response using complex sentences.
✅ Teachers use peer marking & student reflection to ensure understanding.

This engaging approach ensures strong sentence-level writing skills, preparing students for more sophisticated writing in later years. 🚀