Building insight into the psychological theory of learning mathematics and its application in learning and teaching mathematics. The material coverage focuses on mathematics learning problems with a psychological approach which includes the formation of mathematical concepts, schematic ideas, mathematical thinking, interpersonal and emotional factors as well as mathematical problem solving, learning skills (Critical thinking, Creativity, Collaboration, Communication) , life skills, literacy skills; mathematical literacy (mathematical literacy), and statistical literacy (statistical literacy). This lecture will be carried out through active learning activities with discussions, presentations, simulations, or independent learning that utilizes communication and information technology.