Trigonometric functions The possibility that pupils can interact with
trigonometric functions should improve the comprehension of their characteristics and
properties. In these activities it is aimed on one hand, that the teacher has at
their disposal a tool to illustrate their explications when they define the trigonometric
functions, and on the other hand, the pupils can intervene changing parameters and
watching the results. The ease with which the parameters which define each
activity can be modified, allows numerous exercises to be made up, adapted to the
objectives of each teacher at each level and the needs of each pupil.
Ministerio de Educación, Cultura y Deporte. Aņo 2000