Class 9 / Grade 9

Introduction Motion is a fundamental concept in physics that describes how objects change their position over time. Understanding different types of motion is essential in explaining real-world phenomena. This project demonstrates rotational motion, circular motion, oscillatory motion, and periodic motion using simple DIY setups, making it ideal for a science exhibition. Types of Motion Demonstrated … Read more

Introduction DNA, or Deoxyribonucleic Acid, is the molecule that carries the genetic information of all living organisms. It is structured like a double helix – two twisted strands connected by base pairs (A-T and G-C). For science exhibitions, creating a rotating DNA working model helps students visualize its structure and importance in heredity, cell functions, … Read more

Introduction The Bohr Atomic Model, proposed by Danish physicist Niels Bohr in 1913, explains the structure of an atom in a simple way. According to this model, an atom has a positively charged nucleus at the center, and electrons revolve around it in fixed circular orbits, similar to how planets orbit the Sun. This DIY … Read more

Air pollution is one of the most dangerous environmental problems in the modern world. Smoke from factories, vehicles, apartments, and houses fills the air with harmful particles and gases like carbon monoxide (CO), nitrogen oxides (NOx), sulfur dioxide (SO₂), and fine dust. This reduces air quality, harms human health, damages crops, and contributes to global … Read more

An atom is the smallest unit of matter, consisting of protons, neutrons, and electrons. This model will use plastic balls, GI metal wire, LED lights, and a battery to represent these particles. Materials Required Step-by-Step Construction 1. Base Preparation 2. Nucleus (Center of Atom) 3. Electron Orbits 4. Electrons 5. Electrical Circuit 6. Finishing https://www.youtube.com/@howtofunda