Page 445 - Istenič Andreja, Gačnik Mateja, Horvat Barbara, Kukanja Gabrijelčič Mojca, Kiswarday Vanja Riccarda, Lebeničnik Maja, Mezgec Maja, Volk Marina. Ur. 2023. Vzgoja in izobraževanje med preteklostjo in prihodnostjo. Koper: Založba Univerze na Primorskem
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Uporaba geometrijskega orodja v učbenikih nekoč in danes
and Determination of Two Parallel and Perpendicular Line Segments.« V
Proceedings of the 40th Conference of the International Group for the Psycho-
logy of Mathematics Education, uredili C. Csikos, A. Rausch in J. Szitanyi,
299–306. Szeged: International Group for the Psychology of Mathematics
Education.
Uran, T., F. Bitenc in S. Mutić. 2011. Kocka 4: matematika za 4. razred osnovne šole.
3. izd. Ljubljana: Modrijan.
Uršič, S., in J. Vogrinc. 1980. Matematika za 4. razred osnovne šole. Ljubljana: Za-
vod Socialistične republike Slovenije za šolstvo.
Vollrath, H. J. 1999. »Historische Winkelmessgerate in Projekten des Mathema-
tikuntertichts.« Mathematikunterricht 45 (4): 42–58.
Zavod Socialistične republike Slovenije za šolstvo. Obvezni predmetnik in učni
načrt osnovne šole. 1983. Ljubljana: Zavod Socialistične republike Slovenije
za šolstvo.
Završnik, R., in J. Žabkar. 1959. Računica za četrti razred osnovnih šol. Ljubljana:
Državna založba Slovenije.
Žakelj, A., in A. Klančar. 2022. »The Role of Visual Representations in Geometry
Learning.« European Journal of Educational Research 11 (3): 1393–1412.
Use of Geometric Tools in Textbooks: Then and Now
In this paper, we present a historical overview of the use of geometric tools
in textbooks for mathematics in elementary school in Slovenia over the last
hundred years in chosen topics in geometry. We focus specifically on drawing
parallel and perpendicular lines and on measuring angles. We note that until
the mid-1900s there was the use of the triangular ruler, straight ruler, and pro-
tractor. Then in a short period of time, these tools were joined by the geotri-
angle. For the last forty years, only the geotriangle has been used in teaching,
a geometric tool that combined the straight ruler, triangular ruler, and a pro-
tractor. At the end of the paper, we present some deliberation about the use of
geometric tools with the upcoming renewal of curricula in Slovenian schools.
Keywords: geometry, mathematics education, geometry tools, geotriangle
445
and Determination of Two Parallel and Perpendicular Line Segments.« V
Proceedings of the 40th Conference of the International Group for the Psycho-
logy of Mathematics Education, uredili C. Csikos, A. Rausch in J. Szitanyi,
299–306. Szeged: International Group for the Psychology of Mathematics
Education.
Uran, T., F. Bitenc in S. Mutić. 2011. Kocka 4: matematika za 4. razred osnovne šole.
3. izd. Ljubljana: Modrijan.
Uršič, S., in J. Vogrinc. 1980. Matematika za 4. razred osnovne šole. Ljubljana: Za-
vod Socialistične republike Slovenije za šolstvo.
Vollrath, H. J. 1999. »Historische Winkelmessgerate in Projekten des Mathema-
tikuntertichts.« Mathematikunterricht 45 (4): 42–58.
Zavod Socialistične republike Slovenije za šolstvo. Obvezni predmetnik in učni
načrt osnovne šole. 1983. Ljubljana: Zavod Socialistične republike Slovenije
za šolstvo.
Završnik, R., in J. Žabkar. 1959. Računica za četrti razred osnovnih šol. Ljubljana:
Državna založba Slovenije.
Žakelj, A., in A. Klančar. 2022. »The Role of Visual Representations in Geometry
Learning.« European Journal of Educational Research 11 (3): 1393–1412.
Use of Geometric Tools in Textbooks: Then and Now
In this paper, we present a historical overview of the use of geometric tools
in textbooks for mathematics in elementary school in Slovenia over the last
hundred years in chosen topics in geometry. We focus specifically on drawing
parallel and perpendicular lines and on measuring angles. We note that until
the mid-1900s there was the use of the triangular ruler, straight ruler, and pro-
tractor. Then in a short period of time, these tools were joined by the geotri-
angle. For the last forty years, only the geotriangle has been used in teaching,
a geometric tool that combined the straight ruler, triangular ruler, and a pro-
tractor. At the end of the paper, we present some deliberation about the use of
geometric tools with the upcoming renewal of curricula in Slovenian schools.
Keywords: geometry, mathematics education, geometry tools, geotriangle
445
