I am Arya Sebastian. I have completed my M. Tech in communication systems. As I have passion towards mathematics subject, I started teaching maths for students from 6 th std to 8 th std. I have 3 years of experience in teaching. I used to handle CBSE, ICSE and IGCSE syllabus. In this master class, I found interest to take the chapter Rational numbers for 8 th std CBSE students. After this class, you will get a clear idea to differentiate between Rational numbers, Ntural numbers, Integers and Whole numbers. In this chapter we deal with what are rational numbers, properties of rational numbers, additive identity, multiplicative identity, additive inverse, multiplicative inverse and so on. Also you will clearly understand the addition, subtraction, multiplication and division of rational numbers. Rational numbers are very interesting set of numbers those contains both positive and negative numbers. I would like to share few ideas about these set of numbers to my dear students.