The curriculum: it is a document that relates information of the compulsory and fundamental areas as well as the optional ones, it is essential for the proper functioning of the educational institutions because it serves as a guide for the decisions that are taken in administrative and academic within the educational establishments; It also serves as a source of information for users of the educational service who seek particular interests when choosing the type of training they are willing to receive.
Newton discovered gravity. The discovery of gravity .. Newton argued that the main force in the universe, although it was very much clear to Newton that gravity basically affected all objects on Earth and including in space.