Abstract

This study focuses on the contribution that can have a job on the instructions in motivating students to scientific
common trunk (TCS).
The lack of student motivation is a problem frequently encountered in class. The causes are both socio - cultural
and individual. Initially, several theories on motivation in schools are presented. Then, the work is centered on
extrinsic motivation to improve: the motivation to succeed his scientific education test of the core curriculum.
To achieve this goal, an aspect of the test is thorough: Understanding instructions by students and the other is
to make students work independently.
Finally, to improve this understanding, cooperative work between core curriculum for science students was
established.
The results of this study, unfortunately inconclusive, are then presented and some new lines of work are
discussed.