Grade 9 Biology

What biology is, why we study it, the scientific method, a biologist's tools, and using a light microscope.

• Unit 1 — Introduction to Biology — Chapter PDF
• Lesson 1 — What Biology Is and Why We Study It
• Lesson 2 — The Scientific Method
• Lesson 3 — Tools of a Biologist
• Lesson 4 — Using a Light Microscope
• Unit 1 — Introduction to Biology — Module Review & Quiz

The characteristics of life, how organisms are classified and named, and the five kingdoms.

• Unit 2 — Characteristics and Classification of Organisms — Chapter PDF
• Lesson 1 — Characteristics of Living Things
• Lesson 2 — Taxonomy and Principles of Classification
• Lesson 3 — Relevance of Classification and Binomial Naming
• Lesson 4 — Common Ethiopian Animals and Plants
• Lesson 5 — The Five-Kingdom System
• Lesson 6 — Renowned Taxonomists in Ethiopia

Cell discovery and theory, cell structure, cell types, plant vs animal cells, and transport across membranes.

• Unit 3 — Cells — Chapter PDF
• Lesson 1 — Discovery of Cells and Cell Theory
• Lesson 2 — Cell Structure and Organelles
• Lesson 3 — Types of Cells: Prokaryotic vs Eukaryotic
• Lesson 4 — Comparing Plant and Animal Cells
• Lesson 5 — Observing Cells Under a Microscope
• Lesson 6 — The Cell and Its Environment: Transport

Asexual and sexual reproduction, human reproductive systems, the menstrual cycle, pregnancy, birth control, and STIs.

• Unit 4 — Reproduction — Chapter PDF
• Lesson 1 — Introduction to Reproduction
• Lesson 2 — Asexual Reproduction and Its Types
• Lesson 3 — Sexual Reproduction and Sexual Characteristics
• Lesson 4 — Male and Female Reproductive Structures
• Lesson 5 — The Menstrual Cycle
• Lesson 6 — Fertilization and Pregnancy
• Lesson 7 — Methods of Birth Control
• Lesson 8 — Sexually Transmitted Infections

Food and nutrients, a balanced diet, deficiency diseases and malnutrition, substance abuse, and types of disease.

• Unit 5 — Human Health, Nutrition, and Disease — Chapter PDF
• Lesson 1 — Food and Nutrition
• Lesson 2 — Nutrients
• Lesson 3 — A Balanced Diet
• Lesson 4 — Deficiency Diseases and Malnutrition
• Lesson 5 — Substance Abuse
• Lesson 6 — Types of Diseases
• Lesson 7 — Renowned Nutritionists in Ethiopia

Ecological terms and levels, ecosystems and biomes, succession, and relationships between organisms.

• Unit 6 — Ecology — Chapter PDF
• Lesson 1 — Ecology Basics: Terms and Levels
• Lesson 2 — Ecosystems and Biomes
• Lesson 3 — Ecological Succession
• Lesson 4 — Ecological Relationships