09 Which one of the following four teaching methodologies followed by four different science teachers for teaching the topic ' Air pollution ' is most appropriate? 1. dictating the answers to all the questions in the exercise after completing the topic 2. showing a documentary film on ' Air Pollution ' to the students 3. asking the students to collect air samples before and after Diwali, study their quality, and tabulate the findings 4. asking the students to read the topic from the textbook loudly and explaining the meaning of concepts/terms
11 The topic ' Depletion of Petroleum and Coal ' was taught to section A of a class by using multimedia capsule while the other section B was taught through diagrams drawn on the Green Board. It was found later that students of section A understood the topic to a better extent. This could be due to the reason that 1. green board is not a good visual aid 2. multiple approaches is closer to everyday life situations 3. use of multimedia aids is comparatively more economical 4. audio-visual aids engage all the senses for better retention
13 A teacher uses audio-visual aids and physical activities in her teaching because they 1. utilize the maximum number of senses to enhance learning 2. provide relief to the teacher 3. facilitate effective assessment 4. provide a diversion to learners