Abstract
In recent years, wikis have gained a prominent position among web-based collaboration platforms. However, special practices and adaptations are necessary; when applying wikis to software documentation and other development activities. The Wikis for Software Engineering (Wikis4SE) workshop aims to bring together researchers and practitioners interested in the use of wiki technology in this domain. It serves as a forum for presenting new ideas and tools, and reporting on experiences, best practices, and newly discovered problems. The Wikis4SE'2009 workshop builds on the success of prior events at WikiSym'2008 and WikiSym'2007.

Abstract
MathIS is a new project that aims to reinvigorate secondary-school mathematics by exploiting insights of the dynamics of algorithmic problem solving. This paper describes the main ideas that underpin the project. In summary, we propose a central role for formal logic, the development of a calculational style of reasoning, the emphasis on the algorithmic nature of mathematics, and the promotion of self-discovery by the students. These ideas are discussed and the case is made, through a number of examples that show the teaching style that we want to introduce, for their relevance in shaping mathematics training for the years to come. In our opinion, the education of software engineers that work effectively with formal methods and mathematical abstractions should start before university and would benefit from the ideas discussed here.

Abstract
This paper reports on the implementation of a cooperative personal agenda integrated into a collaborative team environment. Concerning developers, traditional project management tools are mainly focused on tasks exclusively related to the project, failing to provide users with the capability of managing tasks not necessarily associated with the work at hand. Scheduling tasks from divergent domains towards a more efficient user planning becomes unfeasible. To overcome this inaptness, we have extended the Redmine platform with an agenda-like behaviour bearing in mind each user's individual constraints.

Abstract
Although some agile projects can succeed without producing any documentation at all, others may require a little more. Best practices of agile documentation suggest producing just enough documentation, at just the right time, and for just the right audience. It is not by coincidence that wikis and agility share goals of simplicity, flexibility, and open collaboration, thus being natural documentation tools to agile projects. When well integrated with other tools, wikis provide open collaboration, quick feedback, easy navigability, integrated contents, and a low barrier for developers to document. In this hands-on tutorial, participants will learn how to adapt and use a wiki to better support software projects. Copyright © 2009 ACM.

Abstract
This paper describes a study conducted at the University of Nottingham, whose goal was to assess whether the students registered on the first-year module "Mathematics for Computer Scientists" appreciate the calculational method. The study consisted of two parts: "Proof Reading" and "Problem Solving". The goal of "Proof Reading" was to determine what the students think of calculational proofs, compared with more conventional ones, and which are easier to verify; we also assessed how their opinions changed during the term. The purpose of "Problem Solving" was to determine if the methods taught have influenced the students' problem-solving skills. Frequent criticisms of our approach are that we are too formal and that the emphasis on syntactic manipulation hinders students' understanding. Nevertheless, the results show that most students prefer or understand better the calculational proofs. On the other hand, regarding the problem-solving questions, we observed that, in general, the students maintained their original solutions. © 2009 Crown.

Abstract
Software development is a knowledge-intensive activity and frequently implies a progressive crystallization of knowledge, towards programming language statements. Although wikis have proved very effective, for both collaborative authoring and knowledge management, it would be useful for knowledge acquisition to better support team awareness and the recognition of knowledge structures, their relations, and their incremental evolution. This paper presents Weaki, a wiki prototype especially designed to support incremental formalization of structured contents that uses weakly-typed pages and type evolution. Weaki was applied in academic settings, by students of Software Engineering Labs. Copyright 2009 ACM.