Independent Explanation Writing

Overview

Unit: Canals and Magic: Explanation Texts (Lesson 5 of 10)
Duration: 60 minutes
Class: Year 4 (8-9 years old)
Class Size: 30 students

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Learning Objectives (National Curriculum England - English Key Stage 2)

• Writing - Composition:

  • Plan writing by discussing and recording ideas.
  • Organise paragraphs around a theme (NC Appendix 2: Explanation texts).
  • Use appropriate organisational devices (e.g., headings, sub-headings, diagrams) to structure writing.
  • Evaluate and edit by assessing the effectiveness of their own writing.

• Spoken Language:

  • Participate in discussions, presentations, performances, role play, improvisations and debates. (To support dyslexia-friendly oral presentations).

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WALT (We Are Learning To)

• Write an independent explanation text describing how canal locks work.
• Include a clear labelled diagram to support our text.

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Success Criteria

• I have written a clear explanation text that explains how canal locks work.
• My text is organised with an introduction, sequential explanation paragraphs, and a conclusion.
• I have included at least one labelled diagram that shows the process of the canal lock in action.
• I have checked my work for clarity and correctness.
• (For oral presenters) I can confidently explain my written work to the class.

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Resources

• Whiteboard/Smartboard
• Writing notebooks/paper
• Pencil cases, coloured pencils, rulers
• Template sheets for explanation texts (provided for support)
• Example explanation text on canal locks from previous lessons
• Diagram examples showing parts of a canal lock
• Visual aids (pictures, videos revisited from prior lessons)
• Dyslexia-friendly coloured overlays and fonts available

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Lesson Structure

1. Starter (10 minutes) – Mind Map Recall & Discussion

• Begin with a quick whole-class recall: What do we know about canal locks?
• Use a mind map on the board to collect key facts and vocabulary (e.g., gates, water levels, boats, lock chamber).
• Highlight organisational language useful for explanation texts (first, then, next, finally).
• Discuss the importance of diagrams in explanation texts – they help readers understand complex processes easily.

Differentiation: Use visual prompts and sentence starters on the board for less confident learners.

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2. Main Activity (40 minutes) – Independent Writing with Diagrams

Part A: Planning (10 minutes)

• Students use their mind map from the starter and scaffolding sheet (if needed) to plan their explanation text.
• Planning includes:
  • Introduction: What is a canal lock?
  • Step-by-step explanation of how a canal lock works
  • Conclusion: Why canal locks are important

Part B: Writing (25 minutes)

• Students write their independent explanation texts based on their plans.
• Encourage them to use chronological language and technical vocabulary learned.
• Students must include at least one labelled diagram illustrating how the lock operates.
• For students needing support, provide a structured template with sentence starters.

Part C: Extension (Optional for advanced learners)

• Add additional diagrams showing details such as gate mechanisms or water flow.
• Include an explanation of the purpose of each part in their text.

Dyslexia-friendly approach:

• Allow students who prefer to orally present their explanation to plan and rehearse a brief presentation instead of pure writing.
• Provide coloured overlays/font options for reading and writing.
• Encourage use of speech-to-text devices if available.

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3. Plenary (10 minutes) – Share & Reflect

• Invite volunteers to share their written explanation or oral presentation with a partner or the whole class.
• Use a talk-partner approach to offer positive feedback: “What did your partner explain well?” “What would you like to ask about canal locks?”
• Quick self-assessment checklist: Which success criteria did you achieve? What could you improve next time?

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Assessment

• Teacher observation during paired sharing and writing time to assess understanding of explanation structure and use of technical vocabulary.
• Review written texts for coherence, use of chronological language, and effectiveness of labelled diagrams.
• Note participation in oral presentations if applicable.

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Differentiation Summary

Learner Type	Support Strategy	Extension	Dyslexia-Friendly
SEN/Lower ability	Use template with sentence starters, visual aids	Additional diagrams with detailed labels	Allow oral presentations; provide overlays/font choices
EAL	Vocabulary glossary; peer support; visuals	Use more technical language and complex sentences	Use bilingual word banks if available
More able writers	Add more detailed explanations and diagrams	Encourage writing with precision language and additional features (e.g., bullet lists)	N/A

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Teacher’s Notes

• Circulate to scaffold language and diagram drawing where needed.
• Encourage peer support and collaboration without giving away answers.
• Emphasise the importance of using the success criteria throughout their work.
• Recognise oral presentations as equally valid to written text for dyslexic or reluctant writers.

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This engaging, inclusive lesson provides Year 4 students the opportunity to consolidate their understanding of explanation texts within the context of canal locks, directly addressing key elements of the National Curriculum for English while fostering confidence in independent writing and communication.