This study aims to approach the teaching of exponential and logarithmic functions regarding the theoretical aspects to the enhancement of concepts. In order to achieve this goal, this study was based on bibliographic research, articles, and dissertations, among other sources. Before we approached the issue on exponentials, we went over the concept of functions and highlited the importance of tables. We also approached the issue of exponentials citing from some of its applications and demonstrations. We brought up, as well, the process of setting up the decimal logarithmic table. In order to enhance the knowledge on the subject, we will make use of calculators and tables so as to reinforce the knowledge over the subject in some activities proposed to demonstrate the properties of the exponential and logarithmic functions as well as the important mathematical constant e which occurs naturally in natural phenomena. We hope to contribute positively to the bringing out of interest to teachers and likewise enhancement to their knowledge on the subject studied and, specially, motivation to students generating a better understanding over the importance of logarithms.