Can your child find the middle number in 2, 5, 7, 9, 11?

The median is the middle value when numbers are ordered. Abacus makes ordering and finding the middle visual.

Here’s the promise: You’ll learn how abacus builds data interpretation skills.

🧩 Why Median Matters

Median is less affected by outliers than mean. It’s used for income data, house prices, and test scores when there are extremes.

🎯 How Abacus Teaches Median

Order beads: Arrange rows from shortest to longest. Find middle row: For odd count, pick centre. Average for even: Add two middle rows, divide by 2. Practice: “Median of 1, 4, 6, 9, 12?” (6). “Median of 3, 7, 2, 10?” (order 2,3,7,10 → (3+7)/2=5).

💡 A Parent’s Example

“My son’s test scores were 85, 90, 65, 95, 80. He ordered them: 65,80,85,90,95. Median = 85. He understood that half were above, half below.”

You might wonder, “Why not just use average?” Median ignores outliers — useful for salary data where a few high earners skew the mean.

❓ FAQ — Median