Healthy Digestion Choices

Overview

Unit: Digestive System Discoveries
Lesson: 6 of 6
Duration: 45 minutes
Class size: 90 students
Age group: Year 4 (8–9 years old)
Subject: Science
Curriculum focus: National Curriculum for England (Science – Animals, including Humans – Years 3 and 4)

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Learning Objectives

By the end of the lesson, pupils will be able to:

• Describe how nutrition and lifestyle choices affect the digestive system (NC link: Animals, including humans - describe the simple functions of the basic parts of the digestive system in humans and identify the different types of teeth in humans).
• Explain why a balanced diet helps digestion and overall health (NC link: Animals, including humans - recognise the impact of diet, exercise, drugs and lifestyle on the way their bodies function).
• Design and communicate a creative poster promoting healthy eating and lifestyle choices that support digestion (Speaks to communication and working scientifically skills in NC).

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Curriculum Links

• Science – Animals, including Humans (Years 3 and 4):

  • Describe the simple functions of the basic parts of the digestive system in humans
  • Recognise the impact of diet, exercise, drugs and lifestyle on the way their bodies function

• Working Scientifically:

  • Asking relevant questions
  • Presenting findings in a variety of ways, including combining text and diagrammatic representations

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Resources Needed

• Large sheets of plain A2 paper (for posters)
• Coloured markers, crayons, coloured pencils
• Example images of healthy vs unhealthy meals and lifestyle activities (printed or projector)
• Whiteboard with markers
• Sticky notes for student input
• Timer or stopwatch
• Worksheet with facts and simple questions (optional)

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Lesson Structure

1. Engage and Recap (5 minutes)

• Begin with a quick verbal recap of the completed unit: key parts of the digestive system and their roles.
• Use a short question round: “Who can name a part of the digestive system?” and “What does it do?” (Builds confidence and retrieval practice.)
• Show images of healthy and unhealthy foods and ask: “How do you think these affect our digestion?”
• Link to learning objective: nutrition affects digestion.

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2. Explore: Nutrition and Lifestyle Discussion (10 minutes)

• In groups of 5 (18 groups total), discuss:
  • What is a balanced diet?
  • How do different foods impact digestion?
  • How does exercise help digestion?
• Provide each group with sticky notes to write down one key fact or idea about healthy digestion.
• Bring the class together and compile sticky notes on the whiteboard or wall, grouping common themes (balanced diet, fibre, hydration, exercise, avoiding junk food).
• Teacher clarifies, adds scientific vocabulary, and connects ideas to digestion (e.g., fibre helps intestines, water aids absorption).

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3. Explain: The Link Between Lifestyle and Digestion (5 minutes)

• Teacher gives a focused mini-lesson using the whiteboard and images:
  • Key nutrients for digestion: fibre, vitamins, water.
  • Lifestyle habits that support digestion: exercising regularly, drinking water, eating varied foods.
  • Negative effects of poor nutrition (e.g., too much sugar or fatty food can slow digestion or cause discomfort).
• Emphasise choices that affect the digestive system’s health.

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4. Apply: Poster Creation (20 minutes)

• Arrange students in their groups of 5, spread around the classroom.
• Task: Create a visually engaging poster promoting healthy digestion through nutrition and lifestyle choices.
• Posters must:
  • Include at least 3 healthy eating tips related to digestion (e.g., “Eat plenty of fruit and vegetables for fibre”).
  • Include 2 lifestyle tips (e.g., “Exercise helps your digestion work well”).
  • Use both words and drawings (diagrams, colourful illustrations).
• Teacher circulates to encourage creativity, prompt deeper thinking, and support factual accuracy.
• Encourage diversity in ideas and presentation styles (e.g., slogans, “Did you know?” boxes).

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5. Share and Reflect (5 minutes)

• Groups display posters on walls or desks.
• Select 3-4 groups to present their poster briefly (1 minute each).
• Peer feedback via “What I liked” and “One question for you” sticky notes at posters.
• Teacher summarises key learning points and congratulates creativity and knowledge gained.

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Differentiation

• Support: Provide sentence starters and key vocabulary cards for groups with lower literacy levels.
• Challenge: Encourage higher-attaining groups to include scientific explanations about how fibre and water aid digestion on their posters.
• Visual and kinaesthetic learners benefit from drawing and discussion.
• Large class size split into manageable groups facilitates peer support.

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Assessment

• Formative assessment through group discussions and sticky note ideas.
• Teacher conducts informal questioning during the mini-lesson.
• Poster presentations assess understanding of nutrition-digestion links and communication skills.
• Peer feedback encourages reflection and evaluation consistent with NC working scientifically.

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Extension Ideas (for further enrichment or homework)

• Keep a food and water diary for one day and write a paragraph on how well their diet supports digestion.
• Interview a family member about their eating and exercise habits and how they think it affects digestion.

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Final Note to Teachers

This lesson consolidates students’ understanding of the digestive system by connecting scientific knowledge to everyday choices. The hands-on poster task promotes creativity, communication, and group work, which are valuable cross-curricular skills. The design also carefully manages a large class by using group work and peer feedback efficiently.

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End of plan.