An Approach that Support Multiple Linked Representations Within an Intelligent Tutoring System for Helping Students to Develop Skills on Designing Digital Circuits. - Evandro de Barros Costa; Hemilis Joyse Barbosa Rocha; Romulo Afonso Luna Vianna de Omena; Marcus Aurélio Cordeiro Piancó Júnior; Henrique Ferreira Alves; Marcos José Ferreira Neto; Aleksander Toledo (WorldCIST (2), 2016)