A no-prep, 6-lesson science unit on GCSE Biology (AQA 4.3 Infection and response): communicable diseases and pathogens; human defences; the immune system and vaccination; antibiotics and drug development; monoclonal antibodies (Triple), written for Key Stage 4 / GCSE (ages 14-16). Phenomenon-first and three-dimensional: every lesson opens with something to wonder about and builds toward the unit’s big question. Open and teach — full teacher plans, projectable slides, three differentiated pupil worksheets per lesson, a complete printable lab pack, a knowledge organiser, and a baseline + end-of-unit assessment.

Big question: How do pathogens cause disease, and how do our bodies and our medicines fight back?

What’s included

• 6 × Teacher lesson plans (Word) on the 5E spine (Engage · Explore · Explain · Elaborate · Evaluate)
• 6 × Pupil worksheets in 3 differentiated tiers (Support / Core / Stretch — mapped to Foundation Higher)
• 6 × Projectable slide decks (PowerPoint, 16:9 widescreen)
• 1 × Full required-practical lab pack (Word) — AQA RP2: investigating the effect of antiseptics or antibiotics on bacterial growth — method, fair-test variables, household and lab equipment lists, a real risk assessment, a blank results table, and analysis + conclusion scaffolds
• 1 × Knowledge organiser (Word, A4 landscape)
• 1 × Baseline + end-of-unit assessment with a teacher answer key — plus 6 original exam-style questions with full mark schemes and command words (describe / explain / evaluate / calculate)
• Hand-coded diagrams with clear labels for the unit’s key ideas — never AI-generated
• Original illustrations for every phenomenon hook

Lesson outline

1. Pathogens and how disease spreads
2. Communicable diseases
3. Defending against pathogens
4. Vaccination and herd immunity
5. Antibiotics, painkillers and developing new drugs
6. Monoclonal antibodies