We follow Imbernón’s (2010) ideas, arguing that an improvement of teacher knowledge
demands a better environment for teaching and learning with collaboration, esteem and
participation. Imbernón states that professional development must entertain an open flux of
ideas, independently of popularity. The learning experience must increase individual teachers’
confidence by drawing on the collective capacity of teachers to find, plan and solve problems in
such ways that they might learn from different solutions. The fact that the majority of teachers
have not studied pedagogical approaches to teaching probability and statistics implies that they
need to be immersed in a process of experimentation in which the materials should not simply
be offered to them, but rather built and discussed by them.