'The name of this ancient device used for calculations is from the Latin for "counting board"'
an abacus
LEFT TO YOUR OWN DEVICES: The name of this ancient device used for calculations is from the Latin for counting board
The name of this ancient device used for calculations is from the Latin for "counting board"
The name of this ancient device used for calculations is from the Latin for "counting board"
LEFT TO YOUR OWN DEVICES
an abacus
LEFT TO YOUR OWN DEVICES