# Plenary session - Wednesday July 8th, 09:00am - 10:00am

## 3. CAS, we can! - But should we? - The Integration of Symbolic Calculators into Mathematics Lessons.

**Hans-Georg Weigand***, University of Würzburg, Germany*

Hans-Georg Weigand is professor for Mathematics Education at the
*University of Würzburg* (Germany). He is involved in pre-service and
in-service teacher education. Since many years he is interested
in the use of new technologies in mathematics education and in
teacher education. He wrote books about Algebra, Geometry und
Computers in Mathematics Education.

Homepage: www.dmuw.de/weigand/

## Abstract

The question of the pros and cons of the use of computer algebra systems (CAS) in mathematics lessons is worldwide intensively discussed. Despite of many contributions to this discussion and empirical investigations, the use of CAS in common classes seems to be quite limited.

A long term project (2003 - 2011) was started to test the use of symbolic calculators (SC) in grammar schools in Bavaria (Germany). The project was firstly done in grade 10. During the 2006/07 school year the project was implemented in grade 11. The content taught was calculus: basic properties of functions, limits, continuity, derivatives, and applications of calculus. The evaluation of the project was intended give answers to the following questions: how basic mathematical skills (algebraic transformations, solving equations) changed; how the students used the SC, how they evaluated the use of the new tool.

The talk will give a summary of the results of the project and will especially - based on the aims of mathematics education and integrating an advanced model of concept formation - analyze and reflect the upcoming possibilities of CAS in handheld-supported lessons.

## Related files

Folien Metz 6.pdf (*presentation in pdf format*, 1 042 245b)

Weigand CAS we can.pdf (*paper in pdf format*, 104 974b)

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