Class 8 Science – Force and Pressure 1. Introduction Force is a push or pull on an object that can change its state of motion or shape. Forces are everywhere – from pushing a door...
Class 8 Science – Sound: Production and Propagation 1. Introduction Sound is a form of energy that produces a sensation of hearing. It is produced when an object vibrates and creates...
Class 8 Mathematics – Direct and Inverse Proportions 1. Introduction Proportion shows how two quantities are related to each other. Helps in solving real-life problems in speed, distance,...
1. Introduction Rational numbers are numbers that can be expressed as the ratio of two integers, where the denominator is not zero. Examples: numbers like 1/2, -3/4, 5, 0. 2. Properties...