Class 9 / Grade 9

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

How To Make Carnival Ride Working Model – DIY Merry-Go-Round with DC Motor | Science Exhibition Project

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In this video, we show you how to build an exciting Carnival Ride working model (Merry-Go-Round) using simple materials and a DC motor. This interactive project is perfect for school science exhibitions, science fairs, classroom demonstrations, and DIY engineering displays. It demonstrates basic principles of rotational motion, mechanical engineering, and electrical circuits in a fun … Read more

Renewable Energy Working Model – Solar & Wind Energy | Science Exhibition DIY

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In this video, we show you how to build a renewable energy working model that combines solar power and wind energy to demonstrate how clean, sustainable energy can be generated and used to power small devices like LED lights or model houses. This working model is ideal for school science exhibitions, science fairs, classroom demonstrations, … Read more

Eclipse Working Model – Earth Rotation | Science Exhibition DIY

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In this video, we demonstrate a 3D working model of an eclipse that shows how solar and lunar eclipses occur due to the relative positions and motion of the Sun, Earth, and Moon. This project is perfect for school or college science exhibitions, science fairs, and classroom demonstrations because it turns abstract astronomy into a … Read more

How To Make Day and Night Working Model – Earth Rotation with LED Lights | Science Exhibition Project

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In this video, we show you how to create an amazing Day and Night working model that clearly explains how the rotation of Earth causes day and night. This project uses a rotating Earth model with LED lights to represent sunlight and darkness, making it perfect for school science exhibitions, science fairs, and classroom demonstrations. … Read more

How To Make Carbon Purification Working Model for Factories – DIY Science Project

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In this video, we present a carbon purification working model that demonstrates how industrial air pollution — especially smoke with carbon and harmful particles — can be filtered and cleaned before being released into the environment. This hands-on project is perfect for school or college science exhibitions, science fairs, and classroom demonstrations. Air pollution from … Read more

How To Make Human Digestive System Working Model (3D) Using Syringes – DIY Science Exhibition Project

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Introduction The human digestive system is one of the most important systems of the body. It helps in breaking down the food we eat into simpler substances so that our body can absorb nutrients and use them for energy, growth, and repair. Without digestion, our body would not be able to get the required nutrients … Read more

How To Make Electric Bell Working Model – DIY Science Exhibition Project

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Introduction An electric bell is a common device used in schools, offices, and homes to produce a sound signal when activated. It works on the principle of electromagnetism, where electric current creates a magnetic field that attracts a metallic hammer to strike a bell or steel plate. The electric bell is an important example of … Read more

How To Make Rainwater Harvesting Working Model – DIY Science Exhibition Project

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Introduction Rainwater harvesting is a sustainable method of collecting and storing rainwater for future use. With increasing water scarcity, this technique helps conserve water, replenish groundwater, and reduce dependency on municipal water supply. Rainwater can be collected from rooftops, road surfaces, and open areas, and then stored in wells, tanks, or ponds for agriculture, gardening, … Read more

How To Make Hydraulic Brakes Working Model – DIY Science Exhibition Project

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Introduction Brakes are one of the most important safety systems in vehicles. Among different types of braking systems, hydraulic brakes are widely used in cars, bikes, and heavy vehicles because they provide strong and smooth braking. Hydraulic brakes work on the principle of fluid pressure transmission, where force applied at one point is transmitted equally … Read more

How To Make Hydroelectricity Working Model – DIY Science Exhibition Project

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Introduction Hydroelectricity is one of the most important and widely used renewable sources of energy. It is produced by converting the energy of flowing or falling water into electrical energy. Hydroelectric power plants generate electricity without producing pollution, making them eco-friendly and sustainable. This Hydroelectricity Working Model is a DIY science exhibition project made using … Read more

How To Make Human Lungs Working Model (Respiratory System) – DIY Balloon & Plastic Bottle Science Exhibition Project

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Introduction The human respiratory system is responsible for breathing and supplying oxygen to the body. Oxygen is essential for the survival of all living cells. The main organs of the respiratory system are the nose, trachea, lungs, and diaphragm. Breathing involves two main processes: inhalation (taking in oxygen) and exhalation (releasing carbon dioxide). This Human … Read more

How To Make Automatic Street Light Working Model – Science Exhibition Project

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Introduction Street lights play an important role in ensuring safety and visibility on roads during the night. In many places, street lights are switched ON and OFF manually, which leads to electricity wastage if they remain ON during daytime. To overcome this problem, automatic street light systems are used. These systems automatically turn ON the … Read more

Day and Night Working Model (3D) – Innovative DIY Science Exhibition Project

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Introduction The phenomenon of day and night is one of the most fundamental and fascinating concepts in astronomy and Earth science. It occurs due to the rotation of the Earth on its own axis, causing different parts of the Earth to face the Sun at different times. When a region of the Earth faces the … Read more

How To Make Drip Irrigation Working Model – DIY Agriculture Science Exhibition Project

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Introduction Water is one of the most precious natural resources, especially in agriculture. Traditional irrigation methods like flood irrigation lead to a huge loss of water due to evaporation, runoff, and seepage. To solve this problem, modern agriculture uses drip irrigation, a highly efficient water-saving technique. Drip irrigation delivers water directly to the root zone … Read more

How To Make Human Kidney Working Model (3D) Using Cardboard and Syringes – Biology Science Exhibition Project

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Introduction The human kidney is one of the most important organs of the body. Kidneys play a vital role in maintaining internal balance by filtering blood, removing waste products, regulating water level, and maintaining proper concentration of salts and minerals. Every day, kidneys filter nearly 180 liters of blood to remove toxins and excess substances, … Read more