# TECHNO GEOMETRY: ENRICHING LEARNING OF GEOMETRY WITH TECHNOLOGY

### Abstract

The ultimate goal of this research was to produce teaching material of plane geometry for

junior high school in Bali. A development study was conducted which was expected to run

over a period of three years. It followed Plomp‘s development model with five phases, i.e. (a)

preliminary investigation, (b) design, (c) realization/construction, (d) test, evaluation, and

revision, and (e) implementation. In the first year, only preliminary investigation and design

phases were done. Need assessment, analysis of situation, and theoretical review were

conducted in the first phase. In the design phase, a possible solution to the problems found

in the previous phase was formulated. The data were collected through interview and

questionnaire given to 36 junior high school mathematics teachers selected from four

regencies in Bali. The data reveal that one of the problems is teachers‘ difficulties in

delivering geometry instruction. This is partly due to the unavailability of appropriate learning

media. Computer-aided learning is a promising solution to this problem. Using dynamic

mathematics software, it is possible to establish learning environment so students can

construct geometry concepts and fully engage in the learning process. Based on this, it is

decided to develop teaching material equipped with media created using dynamic geometry

software. The media are limited to certain topics in plane geometry. The teaching material

has some features: it contains more contextual pictures and problems, describes the use of

geometry concept in daily life, provides in school and out of school activities (paper folding

activities, geogebra activities), presents geometry proofs in the form of narrative, two

column, and diagram proof. This teaching material will be realized and be tested in the last

three phases of Plomp model.

**Proceeding ICIRAD**, [S.l.], v. 1, n. 1, nov. 2015. Available at: <https://eproceeding.undiksha.ac.id/index.php/icirad/article/view/141>. Date accessed: 18 jan. 2021.