🧬 Make diffusion easy to understand with this engaging, interactive KS3 Biology lesson!
Help students discover how substances move into and out of cells by diffusion through an interactive digital lesson packed with self-marking activities, drag-and-drop tasks, quizzes and instant feedback.
Designed for KS3 Science (Years 7–8), this no-prep lesson is ideal for classroom teaching, independent learning, homework, revision or cover lessons. It supports the National Curriculum for England and provides an excellent foundation for GCSE Biology.
Perfect for:
- KS3 Biology
- Years 7–8 Science
- Secondary Science
- Cover lessons
- Home learning
- Revision
- Assessment for Learning (AfL)
Students Will Learn
- ✔ What diffusion is
- ✔ How particles move from high to low concentration
- ✔ Concentration gradients
- ✔ Random movement of particles
- ✔ The role of the cell membrane
- ✔ Factors affecting the rate of diffusion
- ✔ Surface area to volume ratio
- ✔ Diffusion in living organisms
- ✔ Gas exchange in the lungs
- ✔ Diffusion in plant leaves and roots
- ✔ Everyday examples of diffusion
Interactive Activities Include
- ✅ Engaging introduction video
- ✅ Interactive teaching slides
- ✅ Self-marking quizzes
- ✅ Drag-and-drop activities
- ✅ Matching exercises
- ✅ Fill-in-the-gap tasks
- ✅ Sorting and classification activities
- ✅ Multiple-choice questions
- ✅ Labelling activities
- ✅ End-of-lesson assessment
- ✅ Instant feedback throughout
What’s Included
- Interactive HTML5 lesson
- Self-marking activities
- Teacher answer key
- Instant student feedback
- No preparation required
Ideal For
- KS3 Biology
- Years 7–8 Science
- Classroom teaching
- Independent learning
- Homework
- Remote learning
- Revision
- Cover lessons
- Intervention groups
Curriculum Links
National Curriculum England – KS3 Science (Biology)
This resource supports teaching of:
- Cells as the fundamental units of living organisms
- Movement of substances into and out of cells
- Diffusion across cell membranes
- Factors affecting diffusion
- Gas exchange in animals and plants
- Surface area adaptations for efficient exchange
- Cell transport processes
Suitable for:
- National Curriculum KS3
- AQA KS3 Activate
- Oxford KS3 Science
- OCR Gateway KS3
- Edexcel KS3 Science
- Most UK secondary science schemes of work
Why Teachers Love This Resource
- ⭐ No preparation required
- ⭐ Self-marking activities save valuable marking time
- ⭐ Highly engaging and interactive
- ⭐ Instant feedback promotes independent learning
- ⭐ Perfect for classroom teaching, homework, revision and cover lessons
- ⭐ Works on laptops, Chromebooks and tablets
