Here I offer a complete Lesson on Maths A level suitable to Edexcel C1 Integration. This set of notes completely covers the chapter with 60 worked examples. With over 20 years experience in teaching A level Mathematics(Pure Mathematics and Mechanics) I offer these notes covering a wide range of problems with complete solutions. In this way I hope to help students achieve a high score in their A level Maths examination. Each Lesson covers theory and formula necessary for the chapter and step by step explanation of all solutions. Problems are arranged in an ascending order of difficulty reaching A level standard. Applies also for any students studying at this level. It includes: 1) Integration of the form: dy/dx=kx, and dy/dx=kx DEGREESn. 2) Use of boundary conditions to evaluate the constant of integration and hence, find the equation of the curve in the form y=f(x).