Lesson Notes By Weeks and Term v3 - Senior Secondary 3

Lesson Video

This page supports the lesson note with a companion video and a short classroom-ready summary.

Performance objectives

• .
• Define respiration.
• Marking Scheme:* 2 marks for a clear definition, emphasizing gas exchange. (e.g., "Respiration is the physiological process of exchanging gases (oxygen and carbon dioxide) between an organism and its environment.")
• Describe the change of gases in the lungs.
• Marking Scheme:* 4 marks.

Lesson summary

This lesson focuses on the vital process of respiration, which is fundamental to energy production for all physical activities and life processes. Understanding the respiratory system is crucial for appreciating how the body obtains oxygen and expels carbon dioxide, impacting overall health, physical performance, and response to environmental factors. For Nigerian learners, this knowledge is particularly relevant in understanding the physiological demands of sports, the effects of urban air quality, and promoting healthy lifestyles within their communities.

Teacher activity

• Guides students to explain the meaning of external respiration
• Leads a discussion on the processes in volved in the change of gases in the lungs
• Explains the differences between external and in ternal respiration

Evaluation guide

• The evaluation will be based on the provided evaluation guide, assessing students' understanding of the lesson objectives.
• Observation: Monitor student participation in discussions, group activities, and their ability to follow demonstrations.
• Q&A: Ask targeted questions during explanations to check for immediate understanding (e.g., "Where does oxygen go after leaving the lungs?").
• Quick Check: Have students briefly define external respiration on a small piece of paper at the end of the explanation section.
• Summative Assessment Questions:

Reference guide

• Text books
• Diagrams
• Models.
• CD. ROMs
• Projectors