Modular Vertical Abacus with Number & Symbol Cards

Modular Vertical Abacus with Number & Symbol Cards

This is a vertical abacus designed for both learning and flexibility.  
Unlike traditional fixed abaci, this model introduces modularity and customization through interchangeable threaded poles and a front slot for number and symbol cards.  

It features 5 columns with up to 10 beads per column, making it suitable for a wide range of basic arithmetic exercises.

Key Features

 Interchangeable Threaded Poles

The abacus rods are secured with threads, allowing them to be easily removed, swapped, or replaced.  
This makes the abacus highly customizable — you can configure the columns to suit different activities or replace individual parts without rebuilding the entire frame.

Front Card Slot for Numbers & Symbols

At the front of the abacus, there is a dedicated space to insert cards with digits or operation symbols.  
This allows learners to visualize problems directly on the abacus and combine physical interaction with symbolic representation, making it a powerful educational tool.

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Summary

- 5 columns, each holding up to 10 beads  
- Threaded poles: removable, interchangeable, and easy to customize  
- Card slot: display numbers and operations alongside the abacus  
- Educational and modular design: great for learning math in a hands-on way  

This design combines the classic functionality of an abacus with modern modular features, making it perfect for teaching, learning, or even experimenting with custom configurations.