This teaching manual outlines a biology lesson plan about fertilizers. The lesson will introduce students to the two main types of fertilizers - biofertilizers and chemical fertilizers. Students will learn about their composition and effects through class activities and discussion. The major concept is that biofertilizers are essential and safe for maintaining soil fertility. Students will gain factual, conceptual, and procedural knowledge about fertilizers through recalling terms, recognizing relationships between fertilizer types, differentiating them, and understanding their importance for plant growth and cultivation.