<p>A glance at the history books or the pages of a Dickens novel reminds us how far education has come since the days when pupils sat silently in rows memorising knowledge imparted by the teacher. Learning was passive, and only gender and social class affected provision. In today's schools learning is at the centre of what we do and differentiation - the process of modifying a lesson or part of a lesson for one or some of the learners - is a fund...