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CB8a Efficient Transport and Exchange | Edexcel Combined Science (9-1) | Lesson + Worksheet

CB8a Efficient Transport and Exchange | Edexcel Combined Science (9-1) | Lesson + Worksheet

Subject: Biology

Age range: 11-14

Resource type: Lesson (complete)

Last updated

13 October 2026

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pptx, 374.97 KB
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pdf, 59.66 KB

A complete, ready-to-teach lesson for Edexcel GCSE Combined Science (9-1) Biology, CB8 Exchange and Transport in Animals, lesson: Efficient Transport and Exchange (spec points 8.1, 8.2, 8.3). It also suits the shared content of Edexcel GCSE Biology.

Students start from a real count of the alveoli in human lungs, list what organisms must transport in and out, calculate surface area : volume ratios, explain why large organisms need exchange surfaces and a transport system, and explain how alveoli are adapted for gas exchange.

WHAT鈥橲 INCLUDED

  • Efficient Transport and Exchange lesson PowerPoint (18 teaching slides + 1 hidden teacher guide slide), fully editable
  • Lesson companion worksheet: 6 questions that follow the slides, each one tagged with its slide number (PDF + editable Word)
  • Companion answer key (PDF + editable Word)
  • Key terms and things to remember sheet: 7 key words, surface area and volume calculations, things to remember and common mistakes to avoid (PDF + editable Word)

LESSON STRUCTURE

  • Do Now: Retrieval of CB6c diffusion and KS3 body systems
  • Hook: How many air sacs are in your lungs?
  • Objectives: Grade 4, 6 and 8-9 outcomes
  • Teach: What must be transported; surface area : volume ratio; why large organisms need exchange surfaces and transport systems; hinge
  • Alveoli: How alveoli are adapted for gas exchange; sort
  • Check: Video, true or false, tiered questions and exam question
  • Stretch: Why elephants have big ears
  • Review: Exit ticket and confidence check

FEATURES

  • Clear, original diagrams and flow charts where the topic needs them, built up step by step
  • Click-to-reveal answers and animations on every key slide
  • Do Now retrieval quiz, hinge question and true/false misconception check
  • Bronze, silver and gold tiered practice with answers
  • Original exam-style question with a full mark scheme
  • Grade 9 stretch task with a model answer
  • Exit ticket and confidence check
  • Teacher notes on every slide, plus a hidden teacher guide with timings and resources
  • Embedded YouTube video (optional; it plays from the slide when online):
    • Cognito: GCSE Biology - Specialised Exchange Surfaces (2026/27 exams)

TIMING: about 70 min with the video, 65 min without it. The video is optional.

All questions are original and written to match the Edexcel specification. This resource is not endorsed by or affiliated with Pearson Edexcel.

Save more with the full CB8 bundle.

Get this resource as part of a bundle and save up to 30%

A bundle is a package of resources grouped together to teach a particular topic, or a series of lessons, in one place.

Bundle

CB8 Exchange and Transport in Animals | Edexcel GCSE Combined Science (9-1) | 4 Lesson Bundle

Every lesson for **Edexcel GCSE Combined Science (9-1) Biology CB8 Exchange and Transport in Animals**: 4 complete, ready-to-teach lessons, each with a companion worksheet, answer key and key terms sheet. It also suits the shared content of Edexcel GCSE Biology. Bought separately: 拢19.96. Bundle price: 拢14.00. LESSONS INCLUDED - CB8a Efficient Transport and Exchange: What organisms must transport, surface area : volume ratio, exchange surfaces and transport systems, how alveoli are adapted for gas exchange - CB8b The Circulatory System: Red blood cells, white blood cells, platelets and plasma, arteries, veins and capillaries - CB8c The Heart: Chambers, major blood vessels and valves, wall thickness, double circulation, cardiac output, stroke volume and heart rate - CB8d Cellular Respiration: Respiration as an exothermic reaction, aerobic and anaerobic respiration, oxygen debt, Core Practical: rate of respiration EVERY LESSON INCLUDES - Editable lesson PowerPoint with a hidden teacher guide (timings, resources) and teacher notes on every slide - Lesson companion worksheet with slide-numbered questions, plus an answer key (PDF + editable Word) - Key terms and things to remember sheet (PDF + editable Word) - Do Now, hinge question, true/false misconception check, bronze/silver/gold tasks, exam-style question with mark scheme, Grade 9 stretch and exit ticket - Original diagrams, and optional embedded YouTube videos All questions are original and written to match the Edexcel specification. This resource is not endorsed by or affiliated with Pearson Edexcel.

拢14.00

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