Diet and Digestion

Year Group

Year 10

Duration

45 minutes

Class Size

12 students

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Unit: Digestive System Dynamics

Lesson 4 of 5: The Impact of Diet on Digestive Health

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National Curriculum Links (England)

• KS4 Biology – Organisation

  • P2: "The function of the digestive system, including the breakdown and absorption of food."
  • Working scientifically - using research and discussion to develop understanding about healthy eating and its impact on body systems.

• Personal, Social, Health and Economic Education (PSHE)

  • Understanding the impact of diet choices on health and wellbeing.

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WALT (We Are Learning To)

• Analyse how different diets affect the digestive system and overall digestive health.
• Research and evaluate various dietary choices and their implications.
• Discuss and propose healthy eating habits that support digestive function.

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Success Criteria

• I can explain how different types of diets impact the digestive system.
• I can research and provide evidence about positive and negative diet choices.
• I actively participate in group discussions sharing informed ideas about healthy eating.
• I use scientific language correctly when discussing digestion and diet.

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Resources

• Printouts with dyslexia-friendly fonts (OpenDyslexic or similar) summarising diets: high fibre, high fat, high sugar, vegetarian, vegan, and processed-food diets.
• Infographics displaying the digestive system and its processes.
• Laptops/tablets with internet access for research.
• Whiteboard & markers.
• Large paper sheets and coloured pens for group mind maps.
• Diet and digestion glossary sheet.

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Lesson Structure

1. Introduction (5 minutes)

• Recap: Briefly review previous lessons on the digestive system structure and function using an infographic.
• Set the scene: Explain today’s focus: how diet influences digestive health.
• WALT and success criteria shared on the board.

Differentiation: Reading material on board uses dyslexia-friendly fonts. Allow auditory recap for learners who benefit from oral input.

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2. Hook Activity: Think-Pair-Share (7 minutes)

• Pose the question: “How might what we eat affect our digestive system?”
• Students write 2 ideas independently (use coloured paper for visual appeal).
• Pair up and discuss their ideas.
• Share 2-3 ideas with the whole class.

Differentiation: Provide sentence starters for students who need support (e.g., “Eating lots of fibre helps because…”)

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3. Research Task: Diet & Digestive Health (15 minutes)

• Divide students into 4 groups (3 students each).

• Assign each group a diet type:

  • Group 1: High Fibre Diet
  • Group 2: High Fat/High Sugar Diet
  • Group 3: Vegetarian/Vegan Diet
  • Group 4: Processed Food Diet

• Each group receives a dyslexia-friendly fact sheet and access to digital or printed materials.

• Task: Identify key features of the diet, benefits and potential effects on the digestive system (e.g., digestion speed, gut bacteria, absorption).

Differentiation:

• Provide sentence frames and a research template for less confident writers.
• Allow more able students to extend by researching how gut microbiota change with diet.

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4. Group Presentation and Mind Mapping (12 minutes)

• Groups create a mind map on large paper to show their findings.
• Each group presents for 2-3 minutes to the class.
• As they present, the teacher annotates a large class mind map on the board linking diet types to digestive health impacts.

Extension for advanced learners: Encourage use of scientific terminology (e.g., role of fibre in peristalsis, impact of fats on bile secretion).

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5. Class Discussion: Healthy Eating Habits (5 minutes)

• Guided whole-class discussion using the prompt: “Based on what we learned, what does a healthy diet for digestive health look like?”
• Students give examples and teacher highlights key points such as balanced fibre intake, limiting processed sugars, importance of hydration.

Differentiation: Use visual prompts (pictures of healthy and unhealthy foods) to support discussion.

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6. Plenary and Assessment (1 minute)

• Quick "exit ticket": each student writes one way diet can impact digestion and one food habit they will adopt to keep their digestive system healthy.

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Differentiation Summary

• For learners with dyslexia: Dyslexia-friendly reading materials, oral instructions, coloured overlays for printed text, sentence starters.
• For less confident learners: Structured research templates, peer support, visual aids.
• For advanced learners: Extension research tasks on gut microbiota and enzymatic activity; encouraged to use scientific vocabulary; deeper analysis in presentations.

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Extension Activity (Optional Homework)

• Write a letter to a family member explaining the importance of healthy eating for good digestion, including details from the lesson.
• Research a digestive disorder linked to diet and suggest dietary changes that could help.

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Reflection for Next Lesson

• Briefly review student exit tickets to identify misconceptions or areas needing reinforcement.
• Plan deeper dive into digestive disorders related to diet for next and final lesson in the unit.

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This detailed, engaging, and inclusive lesson plan ensures students in Year 10 meet the National Curriculum goals, while making complex ideas accessible and stimulating through collaborative and multimodal activities.