Story of microbial world, Use full and harm full micro organisms. Materials, things, Air — Importance of air, composition of air, atmospheric pressure, and diseases spread through air and their prevention, air pollution — causes, its impact, and measures to prevent, Green House effect. Water — Importance, water resources, tanks, aquatic flora and fauna, measurement of liquids, Water pollution — causes, impact, measures to prevent, purification of water, drought, floods, Water cycle, Draught waste water Treatment. Weather, Climate, Soil our life, rain, floods, Cyclones, disaster management, Habitat, Movements in animals, Production of food from animals and plants, Agricultural operation, Cultivation of Craps, disease to plants and control, improvement of crop yield storage, Preservation and protection of food and plant products, Classification of living organisms, Branches of Sciences, Recent trends in Science, Hybridization, animal husbandry. Why do we fall ill? Animals, different types of Animals, Animals base of our life, Our body parts, External, Internal parts of our body, Bones, Muscles, Sense organs, Organ systems in animals. Nutrition in plants and animals, excretion, respiration control and coordination, reproduction, seed dispersal in plants and control and coordination in organisms. Our food, food components, Nutritious food, Health, Cleanliness, Balanced diet, Malnutrition. Midday Meals, food preservation methods, Wastage of food, How we get food, green revolution, Nutrition of food, Food Pyramid, Junk food, First Aid. Motion and time, Energy, Forms of Energy — Energy resources, Renewable and non renewable resources, conservation of energy Temperature and its measurement. Electricity, Electric circuits, Current and its effects, Sound, reflection of light, Shadows, Playing with magnets, friction, force speed, velocity, combustion, fuels and flame. How to measure things, Coal, Petrol, Petroleum products. Different Ecosystems, Ecology, Bio mass, A biotic, Biotic factors, Global Environmental Issues. Global warming, Acid rains, depletion of Ozone layer. Stars and Solar systems. River, Lively hood, Atmosphere — wind — safety measures — Historical sites — Our Country — World, Our constitution, Child rights.
