This paper shows a Sign Language Teaching Model (SLTM) called: Multi-language Cycle for Sign Language Understanding (MuCy). It serves as complementary pedagogical resource for Sign Language (SL) teaching. A pilot lesson with the Rainbow Colors was conducted at the Association of Parents of Deaf Children of Salamanca in order to determine the Percentage of Development of the Sign Language Communication Skill (SLCS) and others within a Collaborative Learning Environment with Mixed-Reality (CLEMR).