## Abstract

The paper describes the development and analysis of a quantitative study investigating to what extent

the potentials of dynamic geometry environments (DGE), in relation to mathematical reasoning

competency, are utilized in lower secondary school in Denmark. The study entails a questionnaire,

which was developed on the basis of an extensive review that uncovered four potentials of DGE in

relation to reasoning competency: feedback; dragging; measuring; tracing. 220 Danish lower

secondary mathematics teachers completed the questionnaire. Analysis indicates that the potentials

of measuring and dragging are utilized to some degree, feedback to a lesser degree, while tracing is

almost non-existent. Furthermore, there are signs that DGE is used as a substitute for the paper and

pencil environment to solve tasks that were originally designed for paper and pencil. Possible

improvements of praxis are discussed, and the integration of the results in further research is

elaborated upon

the potentials of dynamic geometry environments (DGE), in relation to mathematical reasoning

competency, are utilized in lower secondary school in Denmark. The study entails a questionnaire,

which was developed on the basis of an extensive review that uncovered four potentials of DGE in

relation to reasoning competency: feedback; dragging; measuring; tracing. 220 Danish lower

secondary mathematics teachers completed the questionnaire. Analysis indicates that the potentials

of measuring and dragging are utilized to some degree, feedback to a lesser degree, while tracing is

almost non-existent. Furthermore, there are signs that DGE is used as a substitute for the paper and

pencil environment to solve tasks that were originally designed for paper and pencil. Possible

improvements of praxis are discussed, and the integration of the results in further research is

elaborated upon

Original language | English |
---|---|

Title of host publication | Proceedings of the 14th International Conference on Technology in Mathematics Teaching – ICTMT 14 |

Publisher | Duisburg-Essen Publications online |

Pages | 297-304 |

Publication status | Published - 2020 |

## Keywords

- DGE
- GeoGebra
- reasoning competency
- survey