Casyopee
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What they say:   I used Casyopée to help students solve optimisation problems. It allowed me to present students very open tasks. Students explored and found results that they had to prove afterward. Casyopée also helped students reuse basic strategies for solving.   A teacher
What they say:   Casyopée is faster and more convenient than a calculator.... We have the geometric and algebraic side of the problem at the same time. It is easier to see how a function "reacts." It's useful and interesting.   A student
What they say:   Casyopée makes it easy to calculate a derivative, to factor, to calculate zeros... and have a graph of the function next to it in the same window. It allows on a geometric problem to be able to establish variables that can then be used to study the problem by way of functions...   A student
What they say:   Casyopee is a powerful application that can prove useful to both students and teachers It allows you to use various exploration and modeling tools, with the purpose of studying or teaching mathematical functions.   Softpedia
What they say:   Casyopee comes with lots of features. One of these features is the help provided for proving a function. There is also a feature for writing HTML reports that include the mathematical functions. Casyopee is guaranteed to improve the mathematical knowledge of its users.   phpnuke.org
What they say:   Besides the concept of number, the concept of function is the most important one in mathematics      David Hilbert
What they say:   The notion of function is present in all scientific disciplines, and also in everyday life. Our experience as a teacher shows every day that it is a problem for many students. Situations with Casyopée can also be used outside of a technological environment and everyone will be able to reflect on her professional practice.   A university teacher

Casyopée is a free open-source software environment for the learning of functions at secondary school level. It has been designed by a group of teachers and researchers within several projects.

It aims at making numeric, graphic and formal exploration of mathematical functions easier, as well as problem solving.. It gives students specific help in his/her activities, thanks to symbolic computation. Thanks to the four tabs of the interface (algebra, graphics, dynamic geometry and "geometrical calculations", it allows exploring and modelling diverses situations.

Functions can be created and processed from an algorihm, as a model of a dependency in a geometrical figure, as well as by a formula.

With Casyopée, power means neither complexity nor lack of rigor :

  • choices of representation are in line with mathematical conventions at secondary level ;
  • driving Casyopée is easy, without any command language ;
  • the goal is to help the student, not to restrain him/her.

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