This books covers Number and Algebra unit of IB Mathematics: Analysis and Approaches program for both SL and HL. It includes, Arithmetic Sequences and Series, Geometric Sequences and Series, Exponents and Logarithms and Binomial Expansion. It has two more small sections to completely cover the program. This is an interactive textbook. Every section has written explanations as well as video tutorials. Also the most importantly it has Exam Type Questions. These questions directly prepares you for IB exam. They have written solutions as well as video solutions which explain them in detail.