In this category, we add all the diy school project models for secondary school students,(Class 9 / Grade 9).
Where students can do themselves step by step for their school exhibition or fair
Introduction An X-ray machine is an important medical imaging device used by doctors to see structures inside the human body. It uses a controlled beam of X-rays to create an image of internal structures, especially bones. X-rays pass through the body, but different tissues absorb different amounts of radiation. Bones absorb more X-rays and therefore … Read more
Introduction Natural farming is an eco-friendly method of agriculture that works with nature instead of depending heavily on chemical fertilizers and pesticides. It focuses on maintaining healthy soil, conserving water, using natural inputs, protecting biodiversity, and producing nutritious crops. This working model demonstrates several important practices of natural farming, including cow-based farming, Jeevamrut, vermicompost, water … Read more
Introduction A biogas plant is a system that converts organic waste into useful renewable energy. It uses materials such as cow dung, kitchen waste, food scraps, and other biodegradable waste. In the absence of oxygen, microorganisms break down this waste and produce biogas, which mainly contains methane and carbon dioxide. The methane-rich gas can be … Read more
Introduction The ozone layer is a protective layer of gas present in the Earth’s stratosphere. It absorbs most of the Sun’s harmful ultraviolet (UV) radiation and protects living organisms from problems such as skin damage, eye diseases, and harm to plants and animals. This working model explains how ozone depletion happens, what causes it, and … Read more
The Wind Turbine Working Model is an excellent DIY science exhibition project that demonstrates how wind energy can be converted into electrical energy using a simple wind turbine. Wind energy is one of the most important renewable energy sources because it is clean, sustainable, and environmentally friendly. This model helps students understand the basic principles … Read more