dETECT: A Model for the Evaluation of Instructional Units for Teaching Computing in Middle School. - Christiane Gresse von Wangenheim; Giani Petri; André W. Zibetti; Adriano Ferreti Borgatto; Jean C. R. Hauck; Fernando S. Pacheco; Raul Missfeldt Filho (Informatics Educ., 2017)