Diffusion Digital Lesson | KS3 Biology Year 7–8 Self-Marking Activity

☆☆☆☆☆ Add your review • Year 7–9 • 🎓 Interactive Lesson & Activities

Interactive KS3 Biology lesson (Years 7-8), 18 slides: diffusion, concentration gradients and the factors that affect its rate, with self-marking activities.

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Make diffusion easy to understand with this interactive KS3 Biology lesson. 18 slides cover how substances move into and out of cells by diffusion, through self-marking activities, drag-and-drop tasks, quizzes and instant feedback.

Whats inside

18 slides: what diffusion is, concentration gradients, the cell membrane, diffusion in breathing and digestion, factors affecting the rate of diffusion (surface area, concentration gradient, temperature)
Fill-in-the-blanks, sort-the-items and multiple-choice checks throughout
Self-marking, with instant feedback

Why it works

No-prep, supports the National Curriculum for England and builds toward GCSE Biology
Suitable for classroom teaching, independent learning, homework, revision or cover lessons
Runs in any browser on laptops, Chromebooks and tablets

Year Groups	Year 7–9
Resource Type	🎓 Interactive Lesson & Activities
Format	Digital Only
Curriculum	England & Wales — KS3 (Years 7–9)
Added	24 July 2026