Archive for the ‘MSeC2008’ Category

MILCA – A Mobile and Interactive Learning Environment on Campus

Friday, September 26th, 2008

Presentation by Kin Choon Yow (Nanyang Technological University, Singapore) at the 1st World Summit of the Open Knowledge Society, Athens, 24-26 September 2008. Track: Knowledge, Learning, Education, Learning Technologies, and eLearning for the Knowledge Society.

Current learning scenarios are not interactive. But in particular Asian students are very shy and do not dare to ask questions in the classroom. But they are more likely to engage in technologies and post their question online. So can we make use of mobile classroom scenarios? The presented system is build on two core technologies: Multimedia Messaging Service (MMS) and Live Audio Streaming. Students can follow the lecture anywhere on campus. The system is also used in classroom and particularly helpful for lecture with high numbers of participants. Students can send their questions via MMS to the lecturer, MMS questions are displayed underneath the slides, and lecturers can immediately react (real-time lecture feedback).

Evaluation Results: Students like it (some find it cool). Shy students can build up confidence to ask questions. Allow students asking questions even in large classes. Lecturers can understand better how students think and if/how they follow the course. Lecturer can adjust teaching pace immediately.

Questions: How to deal with high numbers of questions during the class? Currently, lecturer answer questions at the end of each sub-section. Some question are similar and are skipped. Do students loose much (attention) time when typing the messages? But the young generation is pretty fast. What are challenges of distance-teaching? Teacher seems to have problems to talk to a screen for several hours. Teacher loose the control and immediate feedback when teaching online, they have bigger influence in the classroom. The social experience of regularly going to university might actually be an important aspect of the learning experience.

Reflexion on the 4th Workshop of Mathematical and Scientific eContent

Tuesday, September 16th, 2008

The 4th Workshop of Mathematical and Scientific eContent was a great opportunity for me to get an introduction into the mathematical eLearning community. I had the chance to talk to many researchers in mathematical education, system designer of educational software, and math/ physics teachers (on secondary and university level).

(1) I received many pointers to existing online materials and courses that we might be able to integrate or allow ours students to use. For example, Patrick Johnson (Postgraduate Student at the University of Limerick) pointed me to the material of their math center. Valentyna Pikalova, Kharkiv National Pedagogical University, Ukraine pointed to me to a corpus of problems that she created to educate math teachers. Valentyna also mentioned the pool of problems she created during her stay in the US. Moreover, Zsolt Lavicza (University of Cambridge) pointed me to his survey on mathematical practice, which I am eager to read as it is a further state of the art contribution I want to list in my Ph.D. thesis.

(2) I was able to try out and get to know many different systems such as the GeoGebra, DME, the MathDox system, and the learning tool presented by Matti Pauna. All of these system support interesting aspects in math education. Reimplementing these features from scratch seems to be very tedious, rather we will analyse whether we can build on the existing approaches.

  • DME: The applet generator could be used to generate interactive problems for our precourse and course system. But the system is not open source, so we need to verify whether we can effort a license.
  • GeoGebra: First I thought that GeoGebra can only be used for secondary school and in particular Geometry. But Patrick Johnson pointed out that he is also using it in his university math lecture. We need to verify whether we can provide our student with useful material in GeoGebra
  • MathDox: We will be in contact with the MathDox group to analyse their interactive exercises. Maybe we can establish a collaboration to produce more English material, alternative strategies for the same problem as well as a tracking of the user’s problem solving path. The latter two would be very interesting from a research-perspective as I am interested in understanding and analyzing mathematical practice and problem solving is indeed an important practice. The former can potentially help to improve our precourse system.
  • Matti’s presentation: We need to get in touch with the project manager (Mika Seppala) to evaluate whether we can point our students to the existing infrastructure and problem pool used at the University of Helsinki. I believe that this system could be helpful to our students.

(3) Talking to the community allowed me to better distinguish the background and focus of my own research group (KWARC). I realized that we are providing basic technology (still in prototypical states) that might be of interest to this community at some point of time but is still at a far too prototypical, technical, and abstract level (which might be necessary for some of our research project and not suited for others). Our group has so far not focused on the particular need of a specific group of users, also we have started to establish first collaboration with real users. Please don’t get me wrong as you read along, I think that my group is doing an excellent job. We have a lot of potential and very existing projects. The following only presents our work from the perspective of this event and my personal opinions on the requirements of this community.

Before our technologies can be used by the workshop participants we need to revise our services and interfaces. For example, the preliminaries we currently expect our users to fullfill do not fit to the background of most participant of the workshop. Most educational researchers use MS Word or specific education software to store their materials. They are not used to formats/ technologies such as LaTeX, OpenMath, MathML, or even semantic Markup format such as our OMDoc. Consequently, suited editors and converters are needed that support the user-friendly transformation/ import of existing eLearning resources into our formats (and to be accepted by the community this would require us to build on existing eLearning standards such as SCORM).

Moreover, the services we provide in our precourse/ course system are not analogously to features of the presented educational software (GeoGebra, DME, …). In contrast to our system, the focus seems to be the (automatized) creation of suited problems, the management of materials, and on interactive technologies that allow the visualization and animation of mathematical concepts/ problems. Teachers do not have the time to help improving a research prototype, they want to use software that has proved to improve the student’s learning experience. Consequently, many participants of the conference are interested in exchanging experiences and news on running, user-friendly, and (more or less) established SW as well as evaluations and guidelines on the use of education technologies.

Our precourse/ course system relates most to the presented tools at the workshop. However, due to limitation of time and budget, we could not consult teachers, mathematicians, or education researchers. Instead, we have been trying to implement this system from scratch, without considering any existing work in the field of mathematical education software. We have not build on any standards, evaluations, or technologies of this community.

Moreover, we did not have the time and skills to run prior studies before the implementation, such as an observation of the student’s situation (tools they have used, methods the know, topics they have covered, prior knowledge they bring along). All we had was a first need assessment from the Academic Affairs Committee of the Undergraduate Student Government. Consequently, we designed the system based on our assumptions and experiences what features/ content the students might need. Problems and contents have been created by former students, based on their perspective on the course. Evaluation of the content is still in progress. Moreover, the usability of all features of the system is not clear, they have not been based on any concrete requirements of our students.

Nevertheless, we share features with the presented eLearning systems: For example, ICT Teacher also provides a chat and forum to communicate with students. Our forum is widely used by the students, as all our TAs are answering the students question and this seems to help them in solving their weekly assignments as well as preparing for the midterm and finals. We provide a questionnaire infrastructure, which will prove its usability within the next week. However, the usability of the libary, slide, and multiple choice section is not clear – as it strongly depends on the quality of the presented material.

However, I am sometimes wondering whether we should rather stop all implementation and rather fully focus on the improvement and extension of our problem pool, i.e. to provide many more examples and solutions for our students. And if resources are available, rather provide additional human support. Using ICT successfully seems to be a very interesting but challenging topic, and has attracted several researchers with much wider backgrounds.

One point I have to make is that the system is also used as case study for my work on mathematical practice. I was hoping that the system would allow me to better understand and support the student’s practice and that I could apply these findings on mathematical practice in general. But the system did not really help me. Instead, I have based my assumptions on literature reviews (on mathematical practice) and understandings/ possibilities/ focus of my research group. For example, as our group has been working on the representation and rendering of notations we are now support a context-aware rendering of mathematical concepts. But we are not sure whether this feature can reduce the discrepancies between the students’ background or speed up their understandings. The second feature that is of interest to some members of the group are examples and their dependencies – but again we are not even sure what services we want to provide and whether this can have any impact on our students. For this we need to start evaluations. Unfortunately, we do not have the required skills and competencies for such studies. But, we have very good competences on the backend side, e.g. the storing, sharing, interlinking, maintenance and mark up of mathematical content. Nevertheless, our technological foundations and (backend) services should also be applied to concrete use cases. At least we should have an idea where we are aiming at, at which point we think we are successful, and how we can evaluate our success.

(4) Some participants have been asking me about my project and further career plans, which very much helped me to reflect on my Ph.D. topic and future plans. They reported on their backgrounds and paths, their hints and experiences will be very helpful. I was very impressed about the openness of the community, I did not feel to be excluded at any moment. Besides the participants, the great atmosphere was also due to an excellent organization and very impressing events/ excursions in the evenings. Thank you all!

As you can see from my above report, the workshop has been tremendously helpful for reflecting on my current work and gathering new ideas. As this is a yearly event, I recommend anyone involved in mathematical software and tools to join this or other events of the mathematical eLearning community. All participants have been open and very enthusiastic about investing time and efforts to improve mathematical education and to eventually countervail the more and more declining numbers of mathematical students and increasing difficulties of students in High School and at university.

Further opportunities:

Math Center for Improving Math Skills

Tuesday, September 16th, 2008

Patrick Johnson (Postgraduate Student at the University of Limerick) introduced me to their math education system. At his university, the math department is responsible for all math education (of mathematicians, computer scientists, engineers, ..). It provides a math center which is a central support facility for all students. Before the semester the math center provides a precourse. It address mature students (over 23) and but also traditional students (fresh from high school) and revises fundamental math on secondary school level. However, traditional students tend not to make use of this precourse. When I think back to my study, we also had a math preparation course that none of us really took seriously. Maybe students are less motivated before the actual start of the university study and rather enjoy the summer ;-)

Anyway, in the first lecture, Patrick’s students have to take a math test, which also covers fundamental secondary level math. It is not part of the grading but allows him and the students a better overview on their abilities. Students that score badly in this test might become more aware that they need to catch up with some math concepts to pass the course. For these students (and all others), the math center offers a two week long revision course: It takes place in the evening and allows students to learn the preliminaries of the math course. After that the math center provides support for the ongoing math course (which includes lectures and tutorials). The material of the math center is taken from the math center of the University of Loughborough (created by Dr Tony Croft); it is available online. In addition to these online worksheets, the centre has also created over 30 applets using GeoGebra.

The math course takes about 12 weeks, with a midterm after the 7th week and a final exam at the end. Freshmen tend to score quite good in the midterm as they are a bit afraid of what is coming and study hard the weeks before. However, if the midterm goes well students seem to reduce their efforts. In consequence, they often score poorly in the final exam and even get problems wrong that they answered correctly in the midterm. So Patrick is now thinking of having 4 intermediate exams to make students to study throughout the whole course.

He also reported that students really appreciate the human support in the math center; someone that holds their hand and can answer all their questions. An online course cannot provide this kind of help. I am thus now wondering whether our online precourse is really the right idea. However, establishing a math center is quite expenses and requires tight collaboration with the math department. What we currently can offer are tutorials with a maximum number of 12 students. Our tutors are mainly 2nd-3rd year students that have taken the lecture and that came to us as they really wanted to do a tutorial (in Ireland this is called peer support).

Another contact Patrick mentioned is Bill Barton of the University of Auckland, New Zealand (see also his profile).

Learning and exercising in an e-class

Saturday, September 13th, 2008

Theme: Using DME and ICT Teacher in mathematics for 14/15 year old students. A very impressing and enthusiastic presentation.

DME is used to create applets for interactive problems, which can be integrated into ICT Teacher. Moreover ICT Teacher is used to present the digital course materials, problems and their solutions. Harm Houwing is authoring these mathematical textbook: The paper version of the textbook and all problems are given to students, while he displays the digital textbook, problems, and solution during classes (solutions are not given to students).

The digital material is projected to a whiteboard, to which comments and explanations can be added. This infrastructure is also used to discuss “ugly” and “clever” solutions of the students.

Presentation by Harm Houwing, Unversiteit Utrecht, at the 4th European Workshop on Mathematical & Science eContents; see abstract

Dynamic Geometry and Problem Solving Strategies

Saturday, September 13th, 2008

Theme: With technologies student solve problems differently.

Presentation by Zoltán Kovács, Hungary, at the 4th European Workshop on Mathematical & Science eContents; see abstract

More Details:

  • case study based on GeoGebra; citing Pólya (for problem solving practice)
  • speaker walked through a geometrical problem: “cut two congruent circles from a triangle such that their area were maximal.” pointing out the problem solving steps (path)
  • presented various problems in GeoGebra
  • evaluation: students were introduced in GeoGebra with easy exercises/ then were instructed how to use tools in the classroom; student played being teachers; essay on selected research paper (was is interesting for me); afterwards splitting students in 2 groups of 12 students; 45 minutes time to solve a geometric problem; first group with GeoGebra+pen&paper and second one with pen and paper only; only two solutions with GeoGebra (one of them correct); second group followed the analytic method (rather than geometric); first group used first GeoGebra and forgot about the pen+paper (even they were told to use pen+paper – this maybe a drawback/ danger in using technologies)

Reflexion on the Workshop of Mathematical and Scientific eContent

Saturday, September 13th, 2008

I had to the chance to talk with Valentyna Pikalova, Kharkiv National Pedagogical University, Ukraine. She is currently doing here Ph.D. on pedagogical aspects of math education. Among others she is collecting and categorizing mathematical problems e.g. distinguishing easy, medium, and difficult problems or well-suited/ inappropriate problems for math teachers. She has experience on different education technologies as she has been using various system to put her materials online, a potential candidate seems to be GeoGebra.

From our discussion I have a better understanding of the workshop’s community. Please note that the following notes are my personal perspectives on the workshop and do not necessarily reflect the actual characteristics of this community.

Most of the international participants seem to be researchers of mathematical education, while there are also many Norwegian teachers attending the event. Challenges of these mathematical education researchers seem to include the following questions:

  • Which technologies have been successfully used in math education?
  • Can technology improve the learning experience?
  • What are drawbacks and pitfalls when using technology?
  • When should teachers make use of technologies? Are there situations that are more appropriate then others?
  • Does the use of technology change mathematical practice? If yes, can this have negative impacts on the mathematical learning experience and resulting mathematical skills?
  • Should traditional teaching methods really be fully replaced or advanced/ enriched by technology?

In contrast, our group provides the technological basis for education technologies. We are working on …

  • Change management of various (semi-structured) materials – potentially this is also useful in an eLearning scenario to maintain and collaboratively edit corpora of course material.
  • A (intelligent) database for mathematical content providing services such as change management or the adaptation of documents
  • A discussion platform for course material
  • A wiki for collaborative content creation
  • A search engine for mathematical content
  • and the theoretical foundations for all our projects (such as the methodology and theory of change management, the development of our document format for mathematical document, and work for allowing easy integration and linking of mathematical theories, …)
  • In consequences, we seem to provide fundamental technologies that could be used in mathematical education at some point of time. However, although we are making progress, most of our technologies are still very prototypical. Some system I could imagine to be of interest soon are …

    • panta rhei – used as precourse and course system for our General Computer Science lecture
    • SWiM – soon used to edit OpenMath Content Dictionaries
    • and the improved version of locutor – a Subversion Client with change management features

    So I believe this community can be seen as potential end-users of our systems. Talking to the participants can be very valuable to use in order to gather real-live requirements and feedback as well as experiences in evaluating technologies. Overall, showing that we produce useful approaches and technologies is an important part of our work we should not neglect.

    However, what I also realized is that the understanding of mathematical eContent strongly differs to our understanding. Standards/ terms like OpenMath, MathML, Content Dictionaires or our own document format OMDoc are not necessarily known by the participants. So we need to do a good job in explaining and motivating our work in order to successfully present it to the community. Moreover, the benefits of semi-structural documents/ the markup of the structural semantics of documents has to be clearly stated. Currently, most participants store their materials in system-specific formats/ Word/ (sometimes) TeX – transformation into OMDoc will be tedious.

    Knowing this now, my talk was really missing relevant preliminaries in order to be understandable and acceptable by the workshop community. It would have been helpful to include a motivation and introduction of our group’s interest (or the common goal of the Mathematical Knowledge Management community in general) as well as our basic methods/ ideas/ assumptions.

GeoGebra: Dynamic Mathematics Software

Friday, September 12th, 2008

Theme: Introduction to the OpenSource System GeoGeobra = Geometry + Algebra

Plenary Lecture by Markus Hohenwarter, Florida State University, at the 4th European Workshop on Mathematical & Science eContents

More details

Technology can enhance learning. But GeoGebra can not yet replace the classroom. Technology should be used with care.

  • Visualization: students can see abstract concepts
  • Representations: students can make connections
  • Experiments: students can discover mathematics

European Virtual Laboratory of Mathematics

Friday, September 12th, 2008

Theme of the Project (finishes in October 2008): Promotion of eLearning in Mathematics. Helping teachers with authoring educational material and sharing eLearning resources – e.g. including the dissemination and translation of resources. Targeting to students from secondary school up to Ph.D., teachers, lecturer and all potential users interested in mathematics.

Zsolt Lavicza, University of Cambridge, at the 4th European Workshop on Mathematical & Science eContents; see abstract

More Details:

  • The system provides statistics on the number of visits and users and includes a questionnaire-based evaluation.
  • Speaker was pointing to the “dramatic decline of mathematical knowledge and skill of students entering universities; universities have reacted with mathematical support centres, additional units, reducing the difficulty of the content and focusing on lower level contents
  • Speaker claims that we need to change the “classical way” of teaching; e.g. with the following methods: (1) renewal of content, (2) extending the use of computer based methods, (3) collaborative learning
  • Renewing content: proper formulation of basic concepts of mathematics; focus on training of logical thinking and appropriate deduction; technical skills
  • Computer support: requires a thorough mathematical knowledge to consciously use software, software skills, …
  • Several international partners

Further Readings

The MathDox Exercise System

Friday, September 12th, 2008

Theme: Introduction to MathDox for math teachers.

Talk Structure (seems to be on a more appropriate level than my talk this morning):

  • Introducing the Document Format (DocBook).
  • Explaining OpenMath and provided examples.
  • Introducing system features: e.g. integration with computational back ends (like GeoGebra)
  • Showing several examples, the interaction behaviour, an a how-to-use demonstration
  • Showing the running evaluation – tracking how many times student look at the solution and how long they need to complete an exercises
  • Leaving out the technical details

Availability
System is OpenSource. Can be downloaded and installed on our server. The exercise may become open source, but most of them are in Dutch. But the plan is to translate these exercises in English and German and distribute to the system. But it depends on other contributors to add further exercises.

Limitation of Exercises
Authors specifies an directed graph for an exercise in which students can move around.
Can their paths be tracked (Jan has been working on this)?

Presentation by Hans Cuypers, Eindhoven University of Technology, at the 4th European Workshop on Mathematical & Science eContents; see abstract

Introducing Dynamic Mathematics Software to Teachers

Friday, September 12th, 2008

Theme: Having a software is not enough. Teachers need to be supported to learn how to use it. Markus faced challenges when starting his job in the US as the prior knowledge and background of the teachers their was different to his former working environment. He had to revise his tutorial material to introduce these teachers to GeoGebra and launched a survey on the complexity of GeoGebra (and DGS in general) and problems that occurred during the workshops.

Presentation by Markus Hohenwarter, Florida State University (GeoGebra) at the 4th European Workshop on Mathematical & Science eContents; see abstract

Details

Factors for successful Technology Use:

  • knowledge about the mathematical content
  • general computer skills
  • knowledge about basic software use
  • knowledge about technology integration: integrating “old” teaching methods with new methods

Technologies used in Mathematical Education
… that was to fast ;-(

Purpose of the study:

  • Identification of common impediments that occur when introducing GeoGebra
  • complexity criteria for DGS tools to determine general difficulty level
  • design new workshop materials

Context & Environment:

  • workshops at university/ schools with teachers
  • all questions of the teachers were written down
  • teachers had to rate the tools they used
  • material was analysed …

Findings (Result of the survey); e.g. …

  • algebraic input and commands are more challenging than use of DGS tools
  • complexity analysis of introduced DGS tools, what makes a tool difficult to use? e.g. complexity depends on the number of actions the user has to perform/ the number of objects/ whether keyboard input is required, and on dependency/ influence between objects (classification tools into easy, middle, hard tools)
  • …and much more …