  This paper is about an experiment with the goal of testing a primary
teacher's resource. This is the next part of a research presented at EMF2009.
This resource must help a teacher to practice a research and proof activity
between peers with her pupils even she had never done this before. The paper
presents the problems given by this project and describes the means to build
the resource and the methodology of the experiment with some classmates. The
results are given illustrating the complexity of the underlying process.
