Teaching Mannual

TEACHING PRACTISE LESSON PLAN

Name of the teacher trainee  : Indu. J. Kumar                                                                        Standard  : IX D Name of the supervisor         : Dr. A .V. Sujith                                                                       Date         : 19/06/2014 Name of the school               : St.Joseph’s Higher Secondary School                                     Period      : 4 Subject                                  : Social Science II                                                                      Duration  : 45 minutes Unit                                       : Our Atmosphere                                                                      Strength  : 39/43 Topic                                     : Composition of Atmosphere                                                                                                                                     Curricular Objectives     1) To develop an idea about the atmosphere                                         2) To learn about the characteristics of  atmosphere                                         3) To understand about the composition of the atmosphere Content Overview        Atmosphere  – composition of the atmosphere – gases in the atmosphere – water                                      Vapour – dust particles – clouds – precipitation – fog – aerosols Content Analysis                        Facts         1) The air envelop that surrounds the earth is known as atmosphere                                         2) The atmosphere is held to the earth by gravitational force                                       3) The atmosphere is composed of gases and they are, Nitrogen, Oxygen, Argon, Carbon dioxide,                                            Neon, Hydrogen, etc.                                       4) Other than gases, water vapour and dust particles are also found in the atmosphere.                                       5) Water vapour and the dust particles forms the clouds and precipitation.                                      6) For the water vapour to condense, the dust in the atmosphere becomes condensation nuclei. These                                            are called aerosols.                           Concepts          1. Atmosphere is the envelope that surrounds the earth                                        2.  Atmosphere is composed of gases, water vapour and dust                                      3. Water vapour and dust particles helps in the formations of fog, cloud and precipitation.              Principle          (1) The composition of the atmosphere plays a vital role in atmospheric changes. Instructional Objectives         Knowledge            Pupil acquires the knowledge of the followings:-                                          Terms : Atmosphere, temperature, pressure, water vapour, dust particles, cloud, aerosols, fog         Understanding     -> To understand the composition of atmosphere         Application           *To analyse the role of constituent gases in the atmosphere.                                              Evaluation           ^ Evaluating the causes and effects of pressure and temperature variations         Interest                 ^ Collecting pictures, reading books etc         Pre-requisites       ^ Knowledge about temperature zones       Attitude/ values      * Develop an attitude of saving atmosphere from pollution and related changes in the  atmospheric                                         Conditions.      Learning aid            A chart showing the composition of the atmosphere.                                          Entry behaviour       Temperature zones, atmospheric gases   Methods/strategies     * Activity oriented discussion and lecturing        Reference              - Social science II text book of standard IX                                      - Physical Geography by Savindra singh                                                                           Content and Activity                                                                                Responses & Evaluation                  From where we get oxygen for our existence?                                                                                                                                                Atmosphere   Yes, atmosphere contains oxygen and many other gases.Can you name any other gases on the                                                                                                                                                 Nitrogen,carbon dioxide   atmosphere? Yes,very good..today we are going to study more about atmosphere and its composition.                                                           AtmosphereBBH Teacher , explains when we reach about 5 km high on a mountain we feels difficulty in bre  Teacher defines, “ Atmosphere  is an air or gaseous envelope that surrounds our earth”. It Extends to a height of several kilometers from the surface of the earth. Teacher then asks, do you have any idea about, how this atmosphere will be held to the earth? It is because of the gravitational force of our earth. Have you ever noticed the dress code of aeronauts or mountaineers?                                                                                                                                                Yes. They wear heavy jackets and oxygen cylinders. Right?                                                                                                                                                Yes Do you know why?                                                                                                                                                No The temperature and pressure conditions are not uniform in everywhere. Teacher , explains when we reach about 5 km high on a mountain we feels difficulty in breathi -ng, because of the coolness and atmospheric pressure. So, the mountaineers wears special type Of clothes and carriers oxygen cylinder with them. Like the same, an astronaut wears space suit And oxygen cylinder due to the atmospheric conditions.                                                        This atmosphere has several components.                                          Composition of Atmosphere (BB) Teacher then explains that, our atmosphere has several gases includes ; Nitrogen, Oxygen, Argon, CO2, Hydrogen etc. Now we could analyse the percentages of these gases in our Atmosphere . Teacher, shows the drawn chart of the composition of the atmosphere.       Composition of Atmosphere Constituents                in % 1) Gases ·        Nitrogen             78 % ·        Oxygen               21 % ·        CO2                    0.035 ·        Hydrogen          0.00005 2) Water vapour         0.1 – 4.0 3) Dust particles   ACTIVITY – II Teacher then asks to do the activity with the help of the chart. Then she gives questions to find    Students do the activity; Out,  1) Which has the largest proportion?                                                                                          Nitrogen           2) Which is leastly composed in atmosphere?                                                                           Hydrogen  Teacher concludes the activity by repeating the answers with description. Teacher says, other than gases,water vapour and dust particles are also found in the atmosphere. Dust particles reach the atmosphere by winds and from the burning up of comets. These water Vapour and dust particles helps the formations of clouds, fogs and precipitation(rainfall) . water vapour condensed in to fog and clouds and clouds rains on our earth. The dust particles becomes ‘ Condensation Nuclie’ (BB), which helps the water vapour to condense. It is called ‘Aerosols’(BB). Teacher concludes the class by summarizing the facts again. SUMMARY  Atmosphere is the air envelope that surrounds the earth for several kilometers. It is held to the earth due to the gravitational force. The atmospheric pressure and temperature are not same in everywhere. Atmosphere is composed of several gases, water vapour and dust particles. REVIEW QUESTIONS   1)    Define atmosphere? 2)    Write a brief note on the composition of the atmosphere.   FOLLOW-UP ACTIVITY v ‘Water vapour and dust have an important role in atmosphere’, evaluate the statement and listout your justifications.