Adaptive author Carole Vella studied Business Studies in the UK. She has a Bachelor of Arts in Business Management and Information Technology, as well as a Masters of Business Administration. Carole has extensive experience in teaching and examining Business Studies in the UK for over 12 years. She has taught a range of subject areas, including Business Administration, Retail, Marketing, Human Resources and Economics. Andrew Spencer has studied education both within Australia and overseas. He has a Bachelor of Education, as well as a Masters of Science in which he specialised in teacher education. Andrew has extensive experience in teaching secondary mathematics throughout New South Wales and South Australia for well over fifteen years. He has taught a range of subject areas including Maths, English, Science, Classics, Physical Education and Technical Studies. His sense of the importance of practical mathematics continued to develop with the range of subject areas he taught in.