Introduction
SST (Social Science and Technology) is a fascinating subject that combines various disciplines such as history, geography, economics, and civics. Creating a working model for SST can be an engaging and effective way to understand and showcase the concepts taught in this subject. Here are some ideas for an SST working model that you can consider:

1. Interactive Map
Create an interactive map that highlights different historical events, geographical features, or economic activities of a particular region. You can use materials like cardboard, colors, and markers to design the map. Add buttons or touch-sensitive areas on the map to display additional information or facts when pressed.

2. Model of an Economy
Construct a model that represents the functioning of an economy. Use different materials to represent the various sectors such as agriculture, industry, and services. Show the flow of money, goods, and services between these sectors using arrows or small moving parts. Explain how the economy functions, the role of different sectors, and the concept of interdependence.

3. Simulation of a Voting System
Design a working model that simulates the process of voting in an election. You can use buttons or switches to represent different candidates or parties. When a button is pressed, the vote count for that candidate increases. Display the results on a screen or using LED lights. This model can help understand the democratic process, voting rights, and the significance of elections.

4. Diorama of Historical Event
Create a diorama that depicts a significant historical event or era. Use materials like clay, cardboard, and paints to bring the scene to life. Add miniature figures, buildings, and props to represent the key elements of the event. Explain the historical context, causes, and consequences of the event using captions or a short presentation.

5. Model of a Sustainable City
Build a model that showcases a sustainable city with eco-friendly infrastructure and practices. Use recyclable materials, solar panels, wind turbines, and green spaces to represent sustainable elements. Explain the concept of sustainable development, renewable energy sources, waste management, and the importance of preserving the environment.

Conclusion
Creating a working model for SST can be an exciting and effective way to understand and present the concepts learned in the subject. Whether it's an interactive map, an economy model, a voting simulation, a historical diorama, or a sustainable city model, these ideas will help you showcase your knowledge and creativity. Remember to explain the concepts and significance of your model to enhance the learning experience.