There is a new wave going on in the Dutch Adult Education, similar to the ideas of Open Learning Centers in Further Education in Great Britain. The intention of this movement is to structure adult education in a way that it fits everyone. That means: more flexible programs, more individual education, more teacher independent learning, and more grading by certificates at different levels. People must be able to study in their own way, time and pace. The basic idea of the new system is Independent Learning. Some starting points of Constructivism can be a base for independent learning. In that way, practitioners may wonder how Constructivism and Realistic Mathematics Education (RME) can be a gateway to independent learning in adult education. If practitioners are able to develop a numeracy program for Adult (Basic) Education, based on the learning principles of Constructivism and RME, then the students can be trained in learning to work more independently at the same time. (Contains 11 references.) (Author/ASK)