In this category, we add all the diy school project models for pre-college students (Class 11 / Grade11 ).
where students can do themselves step by step for their school exhibition or fair
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 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 Mini Lift Working Model. It uses a DC robo motor to pull a lift box up using woolen thread. The lift works like real elevators, where motors and pulleys lift the platform. The motor is powered by a 9V battery and controlled using a switch. It demonstrates basic principles of mechanical work, … 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
In this DIY video, learn how to make a Balanced Diet Wheel Working Model using cardboard, color paper, and a rotating pointer. This simple yet educational project helps students understand the different food groups and the importance of a balanced diet in an engaging way. Turn the arrow to any food group and explain the … Read more
In this video, you’ll learn how to make a Mini Air Cooler (AC) using cardboard, a DC motor, and simple tools. This project is perfect for school science fairs, teaching the concept of evaporative cooling and basic electrical motor use. Step-by-Step Video Instructions: 1. Build the Frame: 2. Add the Fan: 3. Make Cooling Pad … Read more
A hydroelectricity generator converts water flow energy into electrical energy using a turbine and generator. This method is commonly used in hydropower plants to produce renewable electricity. Hydroelectricity Generator Working Model Making This DIY working model will demonstrate how flowing water can generate electricity using a rotating turbine made of bottle caps, a DC generator, … Read more
Rainwater harvesting is the process of collecting, storing, and using rainwater for agricultural purposes. It helps in water conservation, groundwater recharge, and irrigation during dry seasons. This DIY working model will demonstrate how rainwater is collected, stored, and reused for irrigation using a DC water pump and a 9V battery. Materials Required: Steps to Make … Read more
Control (Ctrl) shortcut keys are keyboard combinations that help users perform common tasks quickly. These shortcuts are used with the Ctrl key along with another key to execute commands. Common Control Shortcut Keys and Their Functions: Basic Editing Shortcuts File Management Shortcuts Text Formatting Shortcuts Navigation Shortcuts Browser Shortcuts These shortcuts increase efficiency by reducing … Read more
The sectors of the Indian economy are divided into three main categories based on the type of economic activity: 1. Primary Sector (Agriculture & Natural Resources) 2. Secondary Sector (Manufacturing & Industries) 3. Tertiary Sector (Services & Trade) Relation Between the Sectors: How to make 3D working model on the sectors of the Indian economy … Read more
A computer flowchart is a diagrammatic representation of a process or algorithm using symbols and arrows to show the flow of control. It is used in programming and system design to visually map out logical steps in solving a problem. This working model will visually represent a computer flowchart with LED lights and switches, allowing … Read more