This research work consisted in the implementation of a plan in which, by way of treatment, it was possible to improve the way EFL teachers teach grammar applying activities that involve the different intelligences that students possess to learn a determined subject in Universidad Autonoma de Santo Domingo, campus San Francisco de Macoris, Dominican Republic. The reason for this procedure was to help teachers to improve their English grammar teaching techniques by taking into account the relationship between multiple intelligences and the learning process of English grammar. To carry out this procedure, the teachers and teachers to be, were subjected to a previous survey to verify the way in which they taught the English grammar to their students. It means, to see their capacity to understand the different abilities that their students might have in order to facilitate them the learning process of the English grammar. Moreover, students were also submitted to a survey to see the way in which they were taught by their teachers. After that, the teachers received a training based on the teaching of English grammar considering the multiple intelligences of the students in the classrooms. The training lasted 3 days, 9 hours in total. At the end of the process, teachers were submitted again to a post survey or test which showed an increase in the ability of teachers to implement activities that involve the multiple intelligences of their students, helping this to favor the learning of the English grammar of the students.