Name of the student teacher : D. VAISHNAVI Register No : BB Standard : XII Subject : Biological science Date :

General Instructional Objectives: The pupil: 1.Acquires knowledge about the respiratory system. 2.Understands the knowledge about the lungs. 3.Recalls the previous knowledge about bronchi. 4.Develops the skill of drawing respiratory system. 5.Understands the structure and function of alveoli. 6.Summarises the function of respiratory organs.

Specifications: The pupil,  Recalls respiratory system.  Defines and understand respiratory system.  Mentions the parts of a respiratory system and understands.  Identifies about the organs of airway.  Draws and labels upper respiratory tract.  List outs the respiratory organs.  Narrates about the nasal cavity.  Describes and understands trachea.  Summarises respiratory area.  Illustrates and draws lungs.  Locates the area of lungs.  Recognises pleura and pleural cavity.  Discriminates primary, secondary and tertiary bronchi.  Describes about bronchioles.  Defines alveoli.  Draws and labels alveolus.  Mentions the functions of lungs.  Illustrates human respiratory system and labels the parts.  Establishes the cause and effect relationship of respiratory system.

Approximate time needed: Minutes Prerequisite Skills: Students basic knowledge about respiratory system. Materials and Resources Required for Lesson:  Charts of respiratory system.  Model showing working of lungs.  Match board.  Flash cards.  Black board and colour chalk piece.  Rotating disc.  Slides of respiratory system.  OHP sheets.

Printed Material: Textbook Web Resources: 1.vaishnavivijay.wordpress.comvaishnavivijay.wordpress.com

SPECIFICATION: Motivates CONTENT: Respiratory system LEARNING EXPERIENCE: ( The pupil answers the following questions ) 1.What is the use of going for a walk in early morning ? 2.What is the important gas present in air that helps in life survival ? 3.Which part of our body helps us to breathe ? 4.What is the system of breathing collectively called ? EVALUATION:

SPECIFICATION: Cause and effect relationship CONTENT: No organism would survive. LEARNING EXPERIENCE : The pupil establishes cause and effect relationship of respiratory system. EVALUATION : What would happen if there is no respiratory system ?

SPECIFICATION: Reasons CONTENT: Because it is responsible for the supply of oxygen to our body which is essential for life survival. LEARNING EXPERIENCE : Reasons the respiratory system is responsible for oxygen supply. EVALUATION : Why respiratory system is important for all living organisms ?

SPECIFICATIONS: Identifies CONTENT: Many organs are involved in the process of respiration. LEARNING EXPERIENCE: Observes the chart shown to identify the various respiratory organs. EVALUATION: Mention the various organs of respiration.

SPECIFICATIONS: Recalls CONTENT: The pupil recalls the previous knowledge about respiratory system that a pair of lungs helps in breathing. LEARNING EXPERIENCE: The pupil recalls what is respiration. EVALUATION: Which organ helps in breathing ?

SPECIFICATIONS: Defines CONTENT: The respiratory system provides oxygen to the cells of the body while removing carbon-do-oxide. LEARNING EXPERIENCE: The pupil understands respiratory system. EVALUATION: Respiratory system removes ___________from our body.

SPECIFICATION: Mentions CONTENT: There are three major parts forming the respiratory system:  Airway  Lungs  Muscles of respiration. LEARNING EXPERIENCE: The teacher mentions: What are the parts of respiratory system? The pupil: Listens carefully. EVALUATION: Name the parts of respiratory system.

SPECIFICATION: Identifies CONTENT: The airway includes the nasal cavity, pharynx, larynx, trachea, bronchi and lungs. It carries the air between the lungs and the body’s exterior. LEARNING EXPERIENCE: Identifies the airway from the chart shown. EVALUATION: What are the organs of airway?

SPECIFICATIONS: Draws CONTENT: LEARNING EXPERIENCE: The pupil learns to draw upper respiratory tract. EVALUATION: Draw and label upper respiratory tract.

SPECIFICATION: List outs CONTENT: The respiratory organs include  nasal cavity  pharynx  Larynx  trachea  Bronchi  lungs. LEARNING EXPERIENCE Observes the organs from the chart shown. EVALUATION: Name the respiratory organs.

SPECIFICATION: Narrates CONTENT: The nasal cavity follows the external nose. The nose is a visible prominent structure. The nasal passage opens outside through external nostrils. It opens inside through the internal nostrils at pharynx. LEARNING EXPERIENCE: The pupil: Understands nasal cavity. EVALUATION: The nasal passage opens through the internal nostrils at ________.

SPECIFICATION: Describes CONTENT: The trachea is a membranous tube supported by ‘C’ shaped cartilage rings. The inner wall is lined by mucous membrane. It consists of ciliated columnar epithelial cells. LEARNING EXPERIENCE: The teacher explains what is trachea ? EVALUATION: Which lines the inner wall of trachea?

SPECIFICATIONS: Summarises CONTENT: The total surface of the alveoli will be around metres square and equals the size of the tennis court. LEARNING EXPERIENCE: The pupil: Understands and summarises about respiratory area. EVALUATION: What is the total surface area of alveoli?

SPECIFICATIONS: Illustrates CONTENT: LEARNING EXPERIENCE: The pupil draws the diagram of lungs and label the parts. EVALUATION: Draw the structure of lungs.

SPECIFICATION: Locates CONTENT: The pair of lungs are the actual organs of respiration. It is conical in shaped and placed inside the thoracic chamber. The base of the lungs rest on the diaphragm. The right lung has three lobes and the left lung has two lobes. LEARNING EXPERIENCE: The pupil: Acquires knowledge about location of lungs. EVALUATION: Where are the lungs located?

SPECIFICATIONS: Recognises CONTENT: Each lung is surrounded by a double wall membrane called pleura. The region inside the pleural membrane is named as pleural cavity. This cavity is filled with pleural fluid. LEARNING EXPERIENCE: The pupil: Recognises pleural membrane. EVALUATION: Name the double wall membrane surrounding the lungs?

SPECIFICATIONS: Discriminates CONTENT: The primary bronchi on entering each lung is divided into secondary bronchi. The secondary in turn gives rise to tertiary bronchi. They divide still further and gives rise to bronchioles. LEARNING EXPERIENCE: The pupil: Learns and differentiates bronchi. EVALUATION: What is bronchi?

SPECIFICATION: Describes CONTENT: The bronchioles divide several times to become smaller terminal bronchioles. The terminal bronchioles end in small air filled chambers called alveoli. LEARNING EXPERIENCE: The pupil: Understands bronchioles. EVALUATION: Define bronchioles.

SPECIFICATION: Defines CONTENT: Alveoli is the place where exchange of gases takes place. Exchange of gases is only by simple diffusion. Human lungs have about 300 million alveoli. LEARNING EXPERIENCE: The pupil: Recognise the importance of alveoli. EVALUATION: Human lungs have ___________ alveoli.

SPECIFICATION: CONTENT: LEARNING EXPERIENCE: Draws the diagram of alveoli and labels the parts. EVALUATION: Draw the diagram of alveoli and label the same.

SPECIFICATION: Mentions CONTENT: Functions: The lungs bring in oxygen rich air and removes carbon-di- oxide from the body. It also excretes water vapour. LEARNING EXPERIENCE: The pupil: Understands the function of lungs. EVALUATION: Mention the function of lungs.

SPECIFICATION: Draws CONTENT: LEARNING EXPERIENCE: Draws the human respiratory system. EVALUATION: Draw and label human respiratory system.

Review:  Define respiratory system.  Explain about nasal cavity.  What is inhalation and exhalation?  What is an alveoli?  Describe in detail about the bronchi. Assignment:  Write an essay on the process of breathing.  Mention the organs involved in respiration and their role in breathing.  Draw and label the human respiratory system.