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
An elevator lift is a modern machine used to carry people or goods up and down in buildings. It is also called a lift. Elevators are very useful in tall buildings, offices, hospitals, and shopping malls, where climbing stairs would be difficult or time-consuming. This model shows how a motorized elevator (lift) works using simple … Read more
A soil profile shows the different layers of soil formed over thousands of years. Each layer (called a horizon) has different composition, texture, and function: Materials Needed: Steps to Make the Model: 1. Prepare the Base: 2. Create the Soil Layers (Top to Bottom): 3. Add Details on Surface: 4. Label the Layers: Use small … Read more
The Earth is our home, and the environment is everything around us – air, water, land, plants, and animals. Sadly, human activities like pollution, deforestation, and overuse of resources are harming the environment. If we do not take care of it, the Earth will become unhealthy and unsafe for future generations. We can save the … Read more
A tornado is a powerful and dangerous natural disaster. It is a rotating column of air that extends from a thunderstorm to the ground. Tornadoes are also called twisters because of their twisting, funnel-like shape. Tornadoes form during severe thunderstorms when warm, moist air meets cold, dry air. This causes strong winds to spin in … 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 Tower Crane Working Model that demonstrates both 360° horizontal rotation using a robo motor, and vertical lifting using a slow DC motor. Such cranes are used in real construction to lift and move heavy materials. This model shows how motors, pulleys, and simple circuits help in lifting and rotating heavy loads efficiently. … Read more
This is a working model to show that salt water conducts electricity. Pure water is a poor conductor, but when salt (NaCl) is added, it dissociates into Na⁺ and Cl⁻ ions, which help carry electric current. This is why the LED/buzzer only works when salt is mixed with water. It demonstrates the concept of electrolytes … 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 3-pulley simple machine working model. It shows how pulleys reduce the amount of effort needed to lift a heavy object. The movable pulley provides a mechanical advantage, and the fixed pulleys change the direction of force. Such systems are used in cranes, wells, and elevators.” Materials Needed How to Make Simple pulley … Read more
This is a Kidney Working Model. The syringe represents the kidney, and the sponge or cotton acts like the nephrons which filter blood. When ‘blood’ (colored water) is pushed through the syringe, the cotton filters it and sends the clean fluid or ‘urine’ into the plastic tray, which represents the bladder. This demonstrates how our … Read more
This is a fire alarm working model using a tubelight starter. The starter contains a bi-metallic strip that responds to heat. When a flame (from a matchstick) is brought near, the heat bends the strip inside the starter, completing the electric circuit. This allows current to flow and activates the buzzer, simulating a fire alarm. … Read more