Lesson · L0
Parts of the Soroban
Best for
Best for first contact with the soroban, naming the parts, and building calm familiarity.
1. Read the core idea 2. Study the worked example 3. Practice the related drills
Core idea
Learn the physical structure of the soroban before solving with it.
✓Lesson completed
Saved on this device. Keep the path moving with one quiet next step.
Objectives
- Identify the beam, rods, upper beads, and lower beads.
- Understand that the upper bead is worth five and each lower bead is worth one.
Reusable visual engine
Worked visual for Parts of the Soroban
Step 1
7Step 2
5The soroban becomes easier when you can name each part calmly and consistently.
Key idea
- One upper bead counts as five.
- Each lower bead counts as one.
- The beam separates the two groups.
Practice habit
Before you calculate, point to each part and name it out loud or silently.
Step by step for 7
- Start from an empty rod.
- Move the upper bead to the beam to make 5.
- Move two lower beads to the beam to add 2.
- Read the rod again: 5 + 2 = 7.
Next lesson
Reading a Single Digit
Read one soroban rod accurately before moving to larger numbers.
Related exercises
- Identify the bead groups
The first step in reading a soroban is understanding the value of the two bead groups on a rod.
- Name the beam and active position
Value depends on contact with the beam, not just on bead position somewhere on the rod.