This publication contains seven papers by the staff of the University of Exeter School of Education and by invited outside contributors. The focus is on the changing mathematics curriculum, instructional practices, and research findings. The papers are: (1) "Mathematics Education for the 21st Century: It's Time for a Revolution!" (David Burghes); (2) "Using Interactive Video in Secondary Mathematics" (Dudley Kennett); (3) "Mathematics--An Alternative Approach" (David Hobbs); (4) "Classroom Processes and Mathematical Discussions: A Cautionary Note" (Charles Desforges); (5) "Investigations: Where To Now? or Problem-Posing and the Nature of Mathematics" (Stephen Lerman); (6) "Classroom Based Assessment" (Susan Pirie); (7) "The Use of the History of Mathematics in Teaching" (Derek Stander). (MNS)