What is a Species? – KS3 Science A complete KS3 Science lesson pack explaining what a species is, with a focus on fertile and infertile offspring. Includes: PowerPoint slides, Worksheet, Pop quiz, Crossword activity, The short, engaging stories with questions to help students understand how scientists classify organisms. Suitable for classroom lessons, homework, and revision.

This FULL lesson pack is fully aligned with Cambridge Science Learner’s Book 8 – Topic 4.1: Intruders in an Ecosystem. It supports KS3 students in understanding how introduced (invasive) species affect ecosystems using engaging stories, real-world examples, and interactive activities. What’s included: ✔ PowerPoint presentation explaining intruders in ecosystems ✔ Illustrated story: “Kiwi Land – New Zealand” ✔ Story comprehension questions (1 page – Canva worksheet) ✔ Pop quiz on intruders in an ecosystem (Canva design) ✔ 8 short case-study texts about intruders in ecosystems around the world ✔ 5 comprehension questions for each text ✔ Crossword puzzle covering key vocabulary ✔ Answer keys included Learning objectives: • Define native and introduced species • Explain how intruders disrupt ecosystem balance • Describe real-world examples of invasive species • Use scientific vocabulary correctly • Develop reading comprehension and critical thinking skills Perfect for: ✔ KS3 Science (Year 7–8) ✔ Cambridge curriculum schools ✔ Lesson delivery, revision, or assessment ✔ Cover lessons and homework ✔ DEMO lesson preparation No prep required – print or present immediately.