The environmen Abaku as a tool for development of the concept of additive triads.

Abstract

The article focuses on the concept of additive triads. It includes proposals of activities and tasks in the learning environment Abaku which help pupils with the image of a conventional record of the equality, its left-right reading and the application of commutativity.

To illustrate our considerations, the analyses of pupils' solutions from the author's diploma thesis are presented.

Keywords

• additive triad
• additive operation
• addition and substraction
• binary operation
• equation
• commutative law
• natural numbers