The correct answer is option B, i.e., provide range of ideas and materials for teaching to teachers. Activities involve most of the senses of children, which enable them to learn through their own experiences. The approach is rewarding for both teachers and students. It does not add burden on teachers, rather it makes the teaching-learning process fun and interesting for them. The approach support and promote the teachers by providing range of ideas and materials and their creative use.

Environment shares close relationship with all three streams of natural science. Biotic components of environment include plants, animals and microorganisms which are studied in Biology while abiotic components like temperature, heat and energy are studied in physics and chemistry.

Achieving the same level of learning in all students is not feasible. The level of learning achieved by students differs as the cognitive level differs from individual to individual. The indicator of learning helps in achieving the objectives of learning subject. They are the basis for design of assessment questions activities. They also serve as reference point for understanding the progress of the child by parents and other authorities.

Knowledge widens and deepens as students continue to build links between new information and their existing knowledge base. By linking new information with existing knowledge their level of thinking gradually increases and their performance will enhance.

A good assignment in EVS should primarily aim to revise the lesson for effective learning. It will help in identifying the learning gaps, provide input timely and identifying the strength areas of children.

When asked to take class 5th students on an educational visit, a teacher can make it more meaningful by preparing a structured and elaborate activity sheet about the place to be visited and sharing the same with the students before they visit to make it authentic and meaningful learning.

Laboratory work can be used to investigate, study the specimens and carryout experiments which gives result and the result might change in the direct environment. Student demonstrations will illustrate about the water quality, soil quality etc. Discussion groups are the best method to identify the social environment issues.

EVS is related to the subjects like History, Geography and Science. History speaks about time and chronology, change and continuity, cause and effect and empathy. Geography speaks about place, geographical areas and natural environment. Science tells about the living things, energy, forces, materials and environment awareness.

Practices when implementing the Integrated approach, use of good materials, techniques, good; lesson plan, good atmosphere and encourage creativity.

The correct answer is option C, i.e., Pathogens. The different themes under class I and II EVS curriculum are: about me, others in my world, my needs, keeping oneself clean, safe and healthy, neighbourhood places, plants, animals, transports, communication, world around me and time, space and direction. Pathogens are micro-organisms which causes diseases in humans. The topic is covered under health but in higher classes.