Math, Physics, Chemistry & English in one place! School Brother solves the exercises for you, step-by-step in the easiest way! It has never been easier to do homework! It will also help you to be prepared for: SAT, ACT, General Certificate of Secondary Education, Advanced Subsidiary (AS level), A-levels, General Certificate of Education Advanced Level, Matura Exams. The current version contains: Maths: - Algebra - Graphs - Functions - Linear Functions - Quadratic Functions - Powers - Roots - Fractions - Surfaces - Perimeters - Volumes - Percentage - Converter Physics: - Kinematics - Dynamics - Work, Power, Energy Chemistry: - Chemical Elements English: Tenses: - Present Simple - Present Continuous - Present Perfect - Present Perfect Continuous - Past Simple - Past Continuous - Past Perfect - Past Perfect Continuous - Future Simple - Future Continuous - Future Perfect - Future Perfect Continuous Table of irregular verbs.