Personalised A5 Abacus Certificates x 4
Recognise Maths learners who work hard with these certificates featuring an image of an abacus. Personalise with TWO messages of your choice.
The Abacus vs the Calculator
In late 1946 a Japanese postal official highly skilled in using the soroban (Japanese abacus) engaged in a contest with an American soldier in adding, subtracting, and multiplying numbers. The American used what was then the most modern electromechanical calculator. In four of five contests, the Japanese official with the soroban was faster, being beaten only in the multiplication problems.
Show me more: