This teaching manual provides details for a lesson on the structure of Earth. It includes the name and details of the teacher, school, subject, unit, and lesson. The content analysis section defines key terms and lists facts about Earth's formation and early atmosphere. The classroom activities involve students examining images of Earth's structure, discussing its early conditions and the emergence of life. They role-play as early life forms and analyze Earth's internal chemical activities that were crucial to the origin and evolution of living things. The lesson aims to develop students' understanding of Earth's composition and the factors that enabled life to develop.