Explaining Your Body on Instagram: "Abacus Finger Method (Finger Abacus / Chisanbop-Style Counting) The abacus finger method is a mental math technique inspired by the traditional abacus. Instead of beads, you use your fingers to represent place values and perform fast calculations. Basic Idea Each hand represents place value: Right hand → Ones (units) Left hand → Tens (Advanced users extend to hundreds and thousands mentally.) On each hand: Thumb = 5 Each finger (index to little) = 1 So on one

The History of Chisanbop – A Korean Finger Counting Method Used for Basic Math

Kids Vs Computers: Chisanbop Remembered

Watching kids do lightning fast mental math is both mesmerizing and mind-blowing