Abstract
The causes of failure in mathematics are numerous. The most significant difficulties are related to the language which is used to teach mathematics, the difficulties of the mathematical language itself and those stemming from abstraction. They revolve around the relationships between the three poles of the educational system, the teacher, the student and knowledge. Studies have shown that there is a correlation between the educational methods and the rate of failure in mathematics. The sources of the mistakes made by students can be identified. The remediation of these errors is possible to reduce the rate of failure in mathematics.