P’awaq Yupana: A New Hybrid Logic Abacus

Abstract

P’awaq Yupana is a playful-pedagogical tool developed to facilitate the abstraction of a binary operation performed with the Inka Yupana through the Tawa Pukllay method. It is also useful to enhance computational thinking, enabling the user to find arithmetic solutions through the hybrid logic of three types of arithmetic reasoning : the Andean (pattern recognition), the Indo-Arabic (numerical mental calculation) and the Chinese-Japanese (handling of beads in a counting tool named “abacus” as a support for mental calculation).