Understanding Digestion

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Overview

A 60-minute engaging Science lesson designed for Year 8 SEN students focusing on the digestive system. This lesson aligns with the National Curriculum for England, specifically the Year 8 Programme of Study (Biology – Animals and humans [KS3]). It uses differentiated strategies and dyslexia-friendly resources to ensure all learners achieve success and are challenged appropriately.

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Curriculum Links

• National Curriculum (England) – Science, KS3
  • Topic: Animals including humans
  • Learning objective: "Describe and explain the human digestive system, including the different organs and their functions."
  • Develop understanding of the digestive system processes using appropriate scientific vocabulary
  • Recognise how nutrients are broken down and absorbed in the body
  • Practical inquiry and use of models to develop conceptual understanding

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Learning Objectives (WALT)

• WALT: Understand the main parts of the digestive system and explain their functions.
• WALT: Describe how food is broken down and nutrients absorbed in the body.
• WALT: Demonstrate knowledge of digestion by constructing a simple model of the digestive system.

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Success Criteria

Students will be able to:

• Name key organs in the digestive system (mouth, oesophagus, stomach, small intestine, large intestine).
• Explain, in simple terms, the role of each organ during digestion.
• Show the process of digestion using a hands-on model or visual aid.
• Use basic scientific vocabulary correctly: digestion, enzyme, nutrient, absorption.
• Engage positively in group activities and communicate their ideas clearly.

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Resources

• Dyslexia-friendly labelled diagrams of the digestive system (using sans serif font, clear layout, coloured organ labels)
• Plastic models of digestive organs or printed 3D cut-outs
• Simple role-play cards describing functions of each organ
• Coloured string or pipe cleaners for "nutrient pathways" activity
• Whiteboards and markers for quick quizzes
• Large printed vocabulary cards with definitions
• Visual timer to support structured activity timing

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Lesson Structure

1. Introduction & Starter Activity (10 minutes)

• Activity: Begin with a simple question: "What happens when we eat food?" Collect ideas verbally and write key student responses on the board.
• Introduce WALT and success criteria visually.
• Show the dyslexia-friendly diagram of the digestive system. Briefly point out main organs using a colour coding system.

2. Main Teaching: Organ Functions (15 minutes)

• Use coloured organ models/cutouts and explain the function of each. Use simple, clear language with repetition.
• Differentiation:
  • For learners needing extra support, provide a paired reading of short organ function descriptions with pictures.
  • For advanced learners, prompt them to think about "What happens to different types of food in the stomach or intestine?" and use more scientific terms like enzymes and absorption.
• Dyslexia-friendly reading: Use coloured overlays if needed and oral summaries of text.

3. Interactive Activity: Digestive Role-Play (15 minutes)

• Students work in small groups (4-5) with role-play cards representing organs. Each student explains their organ’s function and acts out the breaking down of “food” (using soft balls or sponge pieces as food).
• Students ‘pass food’ through the digestive system using the pipe cleaners as nutrient pathways.
• Teacher circulates offering prompts and support.

4. Assessment and Recap Quiz (10 minutes)

• Use mini whiteboards to write down answers to quick questions:
  • Name the organ where food is chewed.
  • Which organ absorbs nutrients?
  • What is the job of the stomach?
• Use thumbs-up/down signals for immediate feedback.

5. Extension & Plenary (10 minutes)

• Extension for advanced learners: Challenge them to write a simple explanation of why digestion is important or explain what enzymes do.
• Plenary: Recap learning objectives and ask: "What was your favourite part of the digestive system?" or "Which organ would you be and why?"
• Hand out a dyslexia-friendly worksheet summarising the key points with diagrams and space for labelling, to be completed as homework or additional class work.

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Differentiation Strategies

• Pair verbal instructions with visual aids and hands-on models.
• Use multi-sensory activities (visual, kinesthetic, auditory) to support diverse learners.
• Chunk instructions and check for understanding frequently.
• Provide vocabulary cards with pictures and simple definitions.
• Adjust task expectations: some students label diagrams, others write short explanations.
• Use peer support and buddy systems.
• Allow extra time and breaks for processing information.

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Assessment Opportunities

• Observation during role-play for understanding of organ functions.
• Answers in the mini whiteboard quiz.
• Completed labelled diagrams or homework sheets.
• Verbal questioning throughout lesson to assess recall and comprehension.

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Additional Notes for Teachers

• Use a calm voice and clear pace to help SEN learners process information.
• Keep classroom environment low-distraction with clear, consistent seating arrangements.
• Encourage positive reinforcement for participation to build confidence.
• Provide printed handouts with bold fonts on coloured paper (avoid blue-green combinations) to assist dyslexic students.
• Use clear, simple sentences and avoid scientific jargon without explanation.
• Support transitions between activities with clear signals and timers.

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This lesson plan ensures that Year 8 SEN students gain a meaningful understanding of the digestive system aligned with the National Curriculum whilst making learning accessible, fun, and inclusive.