Reversal Error in Mathematics: Training Against It Using ε⃔ coach

Vicent Santamarta, Pablo Garcia-Segarra, Noelia Ventura-Campos, Aida Moreno-Rus, Zoe Falomir

Abstract: This paper presents ε⃔  coach, a serious game prototype which aims at training players to detect and avoid reversal error when representing word problems of the type “N times as many S as P” algebraically as an equation. The ε⃔  coach visualizes the relative size of the entities in the relation following a qualitative model based on containers. This serious game also provides a quantitative visualization of the entities related using graphics, it helps players to resolve the formulated equation using discrete values and it shows players’ progress.