In this category, we add all the DIY school project models for pre-college students (Class 11 / Grade11 )/ (Class 12 / Grade12 ).
where students can do themselves step by step for their school exhibition or fair
Introduction Water is one of the most important natural resources on Earth. All living organisms—humans, animals, and plants—depend on water for survival. However, in many parts of the world, water scarcity is becoming a major problem. Rapid population growth, climate change, urbanisation, and overuse of groundwater have increased pressure on our water resources. Therefore, we … Read more
Introduction Energy is one of the most important needs of modern society. Electricity powers our homes, industries, hospitals, schools, transportation, communication systems, and everything we depend on in daily life. As the demand for energy increases, countries look for safe, efficient, and reliable sources of power. One such powerful source of energy is nuclear power. … Read more
Introduction Waste is an unavoidable part of human life. Every activity we perform—eating, studying, cleaning, cooking, traveling, and even using electronic devices—produces some kind of waste. With the increase in population, urbanization, and industrialization, the amount of waste generated across the world has increased rapidly. If this waste is not handled properly, it leads to … Read more
Introduction Green energy, also called renewable or sustainable energy, refers to energy obtained from natural sources that are continuously replenished and cause minimal harm to the environment. Examples include solar power, wind energy, hydropower, geothermal energy, tidal energy, and biomass. These sources differ from fossil fuels (coal, petroleum, and natural gas), which take millions of … Read more
Here are 20 questions and answers about hydraulic projects and Pascal’s law, suitable for an science exhibition: Q: What is Pascal’s law? A: Pascal’s law states that any external static pressure applied to a confined, incompressible fluid is transmitted evenly throughout the fluid in all directions without loss. Q: Who formulated Pascal’s law? A: The … Read more
Pascal’s law is applied daily in hydraulic systems, such as in vehicle brakes, where a small force on the brake pedal is transmitted to multiply stopping force at the wheels. Other applications include hydraulic lifts at auto shops, hydraulic jacks for lifting heavy objects, and hydraulic presses used in manufacturing Hydraulic Brakes When you press the … Read more
Here are 25 Chemistry Working Model Ideas for Class 11 — simple, practical, and perfect for school exhibitions. 1. Atomic Structure 3D Model Bohr model or quantum orbital shapes (s, p, d) with LEDs. 2. Periodic Table Working Model Interactive table with lights showing groups, periods, metals/non-metals. 3. Chemical Bonding (Ionic & Covalent Bonds) 3D … Read more
Here are 25 Chemistry Working Model Ideas for Class 12 — all practical, exhibition-friendly, and based on NCERT concepts 1. Electrolysis of Water – Hydrogen & Oxygen Production Working model showing how water splits into H₂ and O₂ using graphite electrodes. 2. Galvanic Cell (Daniell Cell) Working Model Demonstrate Zn–Cu cell, salt bridge, flow of … Read more
Concept / Principle: This project is based on infrared motion detection — it senses changes in infrared radiation (heat) caused by a moving object like a human body.When motion is detected, it activates an LED light and a buzzer, simulating a security or automatic light system. Scientific Principle: Infrared sensors detect IR radiation emitted by … Read more
Aim / Objective: To demonstrate how dry waste collected from households and streets can be converted into electricity by burning it to produce steam, which drives a turbine-generator. Materials Required: Working Principle: Procedure: Observation: Conclusion: The waste-to-electricity model demonstrates the principle of energy conversion from dry waste to electricity.It highlights the importance of waste management, … Read more
Aim / Objective: To demonstrate the phases of the Moon and explain how the positions of the Moon, Earth, and Sun create different lunar phases as seen from Earth. Materials Required: Working Principle: Procedure: Observation: Conclusion: The model effectively demonstrates the mechanism of Moon phases.It helps students understand how the relative positions of the Sun, … Read more
Aim / Objective: To demonstrate how a two-way switch can control the operation of electrical devices like LED lights or a DC motor from two different locations. Materials Required: Working Principle: A two-way switch allows control of a circuit from two different points. Procedure: Observation: Conclusion: The model shows how two-way switches allow electrical devices … Read more
Aim / Objective: To demonstrate how hydraulic pressure can be used to lift a vehicle, showing the application of Pascal’s Law in real-world machinery. Materials Required: Working Principle: The model works on Pascal’s Law, which states that pressure applied to a confined fluid is transmitted equally in all directions. Procedure: Observation: Conclusion: The hydraulic car … Read more
Aim / Objective: To demonstrate how flowing water can generate electricity using a simple hydroelectric setup with a turbine made from waste materials. Materials Required: Working Principle: The model works on the principle of hydroelectricity: Procedure: Observation: Conclusion: The model demonstrates the basic working of a hydroelectric power plant on a small scale.It shows how … Read more
Aim / Objective: To demonstrate the effect of connecting two 9V batteries in series and parallel on voltage, current, and LED brightness, and to understand how switches control the circuit. Materials Required: Working Principle: Procedure: 1. Series Connection: 2. Parallel Connection: Observation: Conclusion: https://www.youtube.com/@howtofunda