Papers from the 22nd Annual Conference of the Mathematics Education Research Group of Australasia Incorporated include the following: (1) "Making Sense of Primary Mathematics" (Gillian M. Boulton-Lewis); (2) "Seeking a Rationale for Particular Classroom Tasks and Activity" (Peter Sullivan); (3) "Research in Mathematics Education in Australia: What it Was--What it Is--What it Might Be" (J.P. Keeves); (4) "Successful Percent Problem Solving for Year 8 Students Using the Proportional Number Line Method" (Shelley Dole); (5) "Cumulative and Exploratory Talk in a Collaborative Learning Classroom" (Mary Barnes); (6) "A Case Study of Teacher Endorsement of an Integrated Learning System" (Annette R. Baturo, Campbell J. McRobbie, Tom J. Cooper, and Gillian C. Kidman); (7) "Enactivism and Mathematics Education" (Andy Begg); (8) "The Writing of Explanations and Justifications in Mathematics: Differences and Dilemmas" (Brenda Bicknell); (9) "The Mathematical Achievement of Children in the Count Me In Too Program" (Janette Bobis and Peter Gould); (10) "Mathematics, ICT and Effective Teaching" (Rod Bramald and Steve Higgins); (11) "Mathematics Teachers and the VCE: Broadening the Educational Landscape" (Christine Brew, Gilah Leder, and Glen Rowley); (12) "An Exploration of Gender Differences in Subject Choice and Belief among Year 12 Students" (Peter C. Brinkworth); (13) "Speaking with Authority in Episodes of Mathematical Discourse" (Raymond A.J. Brown and Peter Renshaw); (14) "Do Games Help the Learning of Probability?" (Tim Burgess); (15) "Invented Algorithms: Teachers Face the Challenge" (Anne Buzeika); (16) "Developing Performance Assessment Tasks in Mathematics: A Case Study" (Rosemary A. Callingham); (17) "Children's Informal Composite and Truncated Partitioning Strategies" (Kathy Charles and Rod Nason); (18) "Jumping to Conclusions: Data Interpretation by Young Adults" (Helen L. Chick); (19) "Conceptual Modelling of Functions by an Experienced Teacher" (Mohan Chinnappan and Mike Thomas); (20) "The Use of Concept Mapping Procedure to Characterize Teachers' Mathematical Content Knowledge" (Mohan Chinnappan, Michael Lawson, and Rod Nason); (21) "Equals, Expressions, Equations, and the Meaning of Variable: A Teaching Experiment" (Tom J. Cooper, Anne M. Williams, and Annette R. Baturo); (22) "Assessing Diagram Quality: Making a Difference to Representation" (Carmel M. Diezmann); (23) "Enhanced Mathematics Learning: Does Technology Make a Difference?" (Katherine Dix); (24) "Of Course I Can['t] Do Mathematics: Ethnicity and the Stereotyping of Mathematics" (Helen J. Forgasz, Gilah C. Leder, and Tasos Barkatsas); (25) "Student Participation: Phenomenon and Analysis" (Patricia A. Forster); (26) "A Tale of Two Cities: When Mathematics, Computers, and Students Meet" (Peter Galbraith, Chris Haines, and Mike Pemberton); (27) "Technology, Mathematics, and People: Interactions in a Community of Practice" (Peter Galbraith, Peter Renshaw, Merrilyn Goos, and Vince Geiger); (28) "Teachers Exploring Numeracy Learning and Teaching in the Early Years of Schooling" (Ann Gervasoni); (29) "Understanding Mathematical Text through Peer Explanations" (Merrilyn Goos); (30) "Emerging Themes in Statistics Education" (Sharon Gunn); (31) "Mental Addition and Subtraction Strategies: Two Case Studies" (Ann Heirdsfield); (32) "The Development of a Framework of Growth Points to Monitor Students' Comprehension of Algebra in Grades 7-9" (Marj Horne); (33) "Influences on Secondary Mathematics Curriculum in Victoria" (John Horwood); (34) "Deaf Students Solving of Arithmetic Word Problems" (Merv Hyde, Des Power, and Robyn Zevenbergen); (35) "Mathematical Knowledge in a Mathematics Teaching Episode" (Clive Kanes); (36) "Learning Styles in Secondary Mathematics Classrooms" (Stephen Keast); (37) "Grade 4, 6 and 8 Students' Strategies in Area Measurement" (Gillian C. Kidman); (38) "Agency/Numeracy: A Poststructuralist Analysis of the Relationship between Classroom Mathematics and Numeracy in New Times" (Mary Klein); (39) "Assessment of Students' Understanding in Geometry: The Difficulties in Writing Good Questions" (Christine Lawrie and John Pegg); (40) "Extended Common Assessment Tasks in VCE Mathematics: Validity, Reliability and other Issues" (David Leigh-Lancaster and Ken Rowe); (41) "Free Problem-Posing: Year 3/4 Students Constructing Problems for Friends to Solve" (Tom Lowrie); (42) "Children's Generated Word Problems: A Case Study" (K.J. Maguire); (43) "The Learning Networks of Isolated Teachers: The Use of Audiographics Communication Technology to Build a Virtual Mathematics Department" (H. Elaine Mayo and Kevin Hannah); (44) "An Analysis of the Teacher's Proactive Role in Supporting the Development of Symbolizations" (Kay McClain and Paul Cobb); (45) "Learning Calculus with Supercalculators" (Barry McCrae, Gary Asp, and Margaret Kendal); (46) "Teacher Mediation of Student Constructions of Algebra Knowledge" (Brenda Menzel and David Clarke); (47) "How to Teach Generalisations in Mathematics?" (Michael Mitchelmore); (48) "The Conjunction Fallacy and Longitudinal Development of Chance Expression" (Jonathan B. Moritz and Jane M. Watson); (49) "Perceptions of Mathematical Understanding" (Judith A. Mousley); (50) "Graphics Calculators in the Public Examination of Calculus: Misuses and Misconceptions" (Ute Mueller and Patricia A. Forster); (51) "Secondary Mathematics Teachers' Responses to Computers and Their Beliefs about the Role of Computers in Their Teaching" (Stephen Norton); (52) "Visual Representations in First Year Statistics" (Lynne Outhred and Pamela F. Shaw); (53) "An Analysis of Year 12 Students' Performances on Basic Algebra Questions" (John Pegg and Robyn Hadfield); (54) "Some Language Issues in the Assessment of Secondary Mathematics" (Bob Perry, Peter Howard, and Brian Miller); (55) "Computer Algebra Systems Facilitate Positive Learning Strategies" (Robyn Pierce); (56) "The Conflict between Teachers' Beliefs and Classroom Practices" (Mal Shield); (57) "Understanding Decimals: The Path to Expertise" (Kaye Stacey and Vicki Steinle); (58) "Accessibility of Applications Tasks" (Gloria Stillman); (59) "Choices of Computational Strategies" (Paul Swan and Jack Bana); (60) "Reducing the Incidence of Mathematical Misconceptions in 'Middle Band' Students" (Philip Swedosh); (61) "Children's Understanding of the Number System" (Noel Thomas and Joanne Mulligan); (62) "Differences between the Sexes in Mathematics Achievement in Australia" (Tilahun Mengesha Afrassa and J.P. Keeves); (63) "The Cross-Cultural Perspective of Teachers' Beliefs and Their Influence on Teaching Practices: A Case Study of Two Teachers Teaching Secondary Mathematics in Australia and Indonesia" (Theresia Tirta Gondoseputro); (64) "Graphics Calculators in Victorian Secondary Schools: Teacher Perceptions of Use" (Patrick Tobin, Alla Routitsky, and Peter Jones); (65) "Cabri Geometry: A Catalyst for Growth in Geometric Understanding" (Jill Vincent and Barry McCrae); (66) "The Relationship between the Purported Use of Assessment Techniques and Beliefs about the Uses of Assessment" (Elizabeth Warren and Steven Nisbet); (67) "Longitudinal Understanding of Conditional Probability by School Students" (Jane M. Watson and Jonathan B. Moritz); (68) "Mathematics: More Time, More Ticks!" (Martin Watts, Sue Miller, and Leo Crameri); (69) "Teacher Action Theories and the Use of Group Work in Upper Primary Mathematics Classrooms" (Allan White); (70) "Exploring Diversity: Year 2 Students' Responses to Questions Concerning Simple 2D Shapes" (Jacquelyn Whitland and John Pegg); (71) "Novice Students' Conceptual Knowledge of Statistical Hypothesis Testing" (Anne M. Williams); and (72) "Students' Optimism, Pessimism and Achievement in Mathematics: A Longitudinal Study" (Shirley M. Yates). (ASK)