Variable

Variable is used for evaluating and substitution because of unknown value that must have representing object to know the value of the variable. mostly used are the letters x, and y to become easier in algebra. But in real life the objects or things in our surroundings are used to become easier and understandable to solve problems and challenges. In our elementary the teachers they did not teach us variable but they teach us to learn objects and things that very related in math and to our life.