Online test Components of Food: What is our food made up of ? Why do we eat a variety of food? Carbohydrates, fats, proteins, vitamins, minerals, fibres, their sources and significance for human health; balanced diet; diseases and disabilities due to food deficiencies.
Online test Getting To Know Plants: What is the structure and function of various parts of the plants - stem, leaf and roots? How do different flowers differ from one another? How does one study flowers? Morphological structure and function of root, stem and leaves. Structure of the flower, differences.
Online test Body Movements: How did people travel from one place to another in earlier times? How did they know how far they had travelled? How do we know that something is moving? How do we know how far it has moved? Need to measure distance (length). Measurement of length. Motion as change in position with time.
Online test Light, Shadows and Reflections: Classification of various materials in terms of transparent, translucent and opaque. A shadow is formed only when there is a source of light and an opaque material obstructs a source it. A shadow is black irrespective of the colour of the object.
Online test Electricity and Circuits: Electric current: Electric circuit (current flows only when a cell and other components are connected in an unbroken loop) Conductor, Insulator. Mica, paper, rubber, plastic, wood, glass metal clip, water, pencil (graphite), etc.