Ed Southall is a teacher trainer in mathematics working for Huddersfield University. He also teaches mathematics in a local 11-16 comprehensive school. Ed has worked in education for 13 years in a variety of roles, starting as a teacher of computing before taking up senior roles leading departments for both computing and mathematics, and working as an Assistant Headteacher. He has also worked abroad in the Middle East as a mathematics education consultant and teacher trainer.
Find out more about Ed in our special author feature: 60 SECONDS WITH ED SOUTHALL

Chapter 1: Types of Numbers (Part 1)
Chapter 2: The Four Operations: Addition and Subtraction
Chapter 3: Multiplication and Division
Chapter 4: Angles and Shapes
Chapter 5: Types of Numbers (Part 2)
Chapter 6: Fractions
Chapter 7: Proportionality
Chapter 8: Measurement
Chapter 9: Algebra
Chapter 10: Statistics and Probability
Chapter 11: Functions and Linear Graphs
Chapter 12: The Pythagorean Theorem and Trigonometry