A FRAMEWORK FOR DESCRIBING THE PROCESSES THAT UNDERGRADUATES USE TO CONSTRUCT PROOFS The purpose of this paper is to offer a framework for categorizing and describing the different types of processes that undergraduates use to construct proofs. Based on 176 observations of undergraduates constructing proofs collected over several studies, I describe three qualitatively different ways that undergraduates use to construct proofs. In the concluding section, I describe the learning that is likely to occur by writing proofs in each of these three ways. INTRODUCTION RESEARCH CONTEXTS Vol 4–28 Proceedings of the 28th Conference of the International Group for the Psychology of Mathematics Education, 2004 Vol 4 pp 425–432 TYPES OF PROOF PRODUCTIONS Procedural proof productions procedural proof production algorithm i=nf(i) = g(n) f(1) = g(1) i=nf(i) = g(n) i=n+1f(i) = i=nf(i) + f(n+1) g(n) + f(n+1) g(n) + f(n+1) = g(n+1) i=n+1f(i) = g(n+1). i=nf(i) = g(n) 4–426 PME28 – 2004 process PME28 – 2004 4–427 Syntactic proof productions syntactic proof production 4–428 PME28 – 2004 Semantic proof production semantic proof production DISCUSSION Learning outcomes of different types of proof productions PME28 – 2004 4–429 only Types of proof productions by the undergraduates in these studies 4–430 PME28 – 2004 References: Proceedings of the 27th Conference of the International Group for the Psychology of Mathematics Education Pythagoras Proceedings of the 27th Conference of the International Group for the Psychology of Mathematics Education Interchange Research Issues in Undergraduate Mathematics Learning: Preliminary Analysis and Results, Educational Studies in Mathematics Educational Studies in Mathematics, Proceedings of the 23rd Conference of PME, Haifa, Israel, Educational Studies in Mathematics PME28 – 2004 4–431 Proceedings of the 2nd International Seminar on Misconceptions and Educational Strategies in Science and Mathematics Mathematics Teacher Advanced Mathematical Thinking Educational Studies in Mathematics Proceedings of the 2nd International Conference on the Teaching of Mathematics (at the undergraduate level) Proceedings of the 27th Conference of the International Group for the Psychology of Mathematics Education Journal of Mathematical Behavior, . Research in Collegiate Mathematics Education. 4–432 PME28 – 2004