Anne Tindale has taught biology and chemistry with great success in the Caribbean - in particular at CSEC® level - for many years and is currently Head of the Science Department at St Winifred's School, Barbados. She is also a best-selling author of courses, workbooks and multiple choice practice titles for the CSEC® sciences. As a teacher and author she has supported thousands of students through their CXC exams. Peter Defreitas is an experienced teacher of physics at both CSEC® and CAPE® levels. Recently retired from a post teaching physics at St Winifred's School, Barbados, he now focuses his time on his ever-expanding tutorial classes and his growing reputation as a writer for physics in the Caribbean.