Mathematical logic and mother tongue

Abstract

Logical thinking is closely connected to the terms statement and logical evaluation (determination if it is true or false). A sentence is the language expression of thought. It means that logical thinking is closely connected to the mother tongue. The idea of a sentence can be introduced even at the elementary school level as a declarative sentence, which clearly expresses something that can be true or not. If we use one of many options in the sentence the opposite declaration must contain all other options. In the present article sentences about numbers of people and things and their opposites are studied. There are also examples of interconnection between logic and the mother tongue in education at the elementary school.