ABSTRACTPsychology is a discipline whose assimilation involves strongly the subject. Knowledge has to prove its power with reality analysis. Theories are tools psychologists ´use´ with multidimensional objects. Shouldn´t we begin teaching problems and procedures before theories? Children learn first how to make something; later what is that. We promote teachers and tutors meetings to discuss this issue. We organize students deep interviews to discover the difference between Classroom learning and Practice Communities learning. The sample joins students of Professional Cycle doing ´Pasantías´. We use the concept of Strategic and Meaningful Learning in specific areas of knowledge´s construction