Class 12 / Grade12

This project demonstrates the working of a thermal power plant, showcasing how thermal energy is converted into electrical energy through a step-by-step process involving a boiler, turbine, generator, and transmission lines. The model is made using cardboard, plastic bottles, chopsticks, a DC motor, fan blades, and an LED to replicate real-world thermal power stations. In … Read more

This is a detailed Nuclear Power Plant Working Model. The process starts in the fusion building (reactor), where nuclear fission generates heat. This heat is transferred via hot water pipes to the turbine building, where steam spins a turbine connected to a generator.Electricity is produced and sent through transmission lines to homes.The excess heat is … Read more

A hydraulic brake uses liquid pressure to transfer force from the brake pedal to the brake drum to stop a vehicle. In this working model, you will show how pressing a “brake pedal” moves hydraulic fluid (water or oil) through a tube to push a “brake shoe” against a “drum” (wheel). Working Principle Demonstrated: Pascal’s … Read more

This model shows how contaminated water causes several dangerous diseases. As the platform rotates, it displays different water borne diseases like Cholera, Typhoid, Hepatitis A, etc. Materials Needed: Step-by-Step Video Instructions: https://www.youtube.com/@howtofunda

n this video, watch a beautiful DIY working model showing the theme “Save Earth – Save Environment” made using simple materials like color paper, cardboard, and LED lights powered by a 9V battery and switch. The Earth is surrounded by people figures made from paper, rotating slowly with the help of a motor. Plants are … Read more

In this video, we demonstrate a simple and effective Earthquake Simulation and Seismograph Working Model for science exhibitions and projects! Watch how a vibrating platform simulates an earthquake and how a basic hanging cup seismograph records the tremors with zig-zag lines on paper. Perfect for school science fairs, physics projects, or earthquake-related demonstrations. Learn how … Read more

This is a working model of an electric bell. When the switch is turned ON, electric current flows through the circuit, powering the DC motor. The motor rotates the nut attached to its shaft, which hits the steel glass to produce a sound. This demonstrates the basic idea of how electric bells use mechanical action … Read more

This is a gravity-based water dispenser. When the water bottle is placed upside down, gravity pushes water toward the straw pipe. Opening the cap slightly allows air to enter, and water flows out through the straw into the glass. This demonstrates how gravity and air pressure can be used to dispense water without electricity or … Read more

This model shows how a water level indicator works. When the water reaches the level of the two safety pins, it completes the electric circuit, turning on the red LED light and the buzzer. This indicates that the tank is full and water should be stopped. It helps in preventing water overflow and wastage, and … Read more

This is an automatic street light working model without sensors. When a vehicle passes over a hump, it presses the push button below, turning on the LED street light. Once the vehicle leaves the hump, the button is released and the light turns off. This shows how street lights can work automatically using simple pressure … Read more

Project Theme: Simulate how a blood pressure monitor (sphygmomanometer) works using hydraulics and pressure concepts with syringes and a cardboard dial to show BP levels. Step-by-Step Video Instructions: 1. Make the Arm Cuff Simulator 2. Hydraulic Pressure Mechanism 3. Create the BP Dial 4. Pressure-to-Pointer Movement How It Works: https://howtofunda.com

In this DIY project, you’ll learn how to build a Streetlight Working Model using cardboard, LED lights, and a 9V battery. Step-by-Step Video Instructions: Manual Version (Switch-controlled): https://howtofunda.com