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GeoGebra in the classroom, a gradual discovery. (GeoGebra en el aula, un descubrimiento gradual.) (Spanish)
Uno 22, No. 71, 13-19 (2016).
Classification: U70 G40
1
Sun crescents. (Sonnensicheln.) (German)
MNU J. 69, No. 5, 310-312 (2016).
Classification: M54 G44 G64
2
On the geometry of parabolas. (Zur Geometrie der Parabeln.) (German)
Mathematikunterricht 62, No. 4, 55-63 (2016).
Classification: G74 G94 G54
3
Turn vs. shape: teachers cope with incompatible perspectives on angle. (English)
Educ. Stud. Math. 93, No. 2, 223-243 (2016).
Classification: G49 C39
4
The central idea of “measuring" ‒ using the potential of a central idea. (Die Leitidee “Messen" ‒ das Potential einer Leitidee nutzen.) (German)
Mathematik 5 bis 10 36, 42-45 (2016).
Classification: D33 F73 G33
5
How wide is the Weser? Using theodolites for trigonometric calculations. (Wie breit ist die Weser? Theodoliten für trigonometrische Berechnungen nutzen.) (German)
Mathematik 5 bis 10 35, 34-37 (2016).
Classification: G63 M53 D83 U63
6
Angle iron. (Winkeleisen.) (German)
MNU J. 69, No. 3, 158-160 (2016).
Classification: G44 G74
7
How large is our football pitch? Students use a self-made theodolite to survey a sports field. (Wie groß ist unser Fußballfeld? Schüler vermessen einen Sportplatz mit Hilfe eines selbst gebauten Theodolits.) (German)
Mathematik 5 bis 10 35, 18-21 (2016).
Classification: G43 M53 D83
8
With auxiliary lines towards the solution. Reasoning and problem solving with angle detection problems. (Mit Hilfslinien zur Lösung. Argumentieren und Problemlösen bei Winkeldetektivaufgaben.) (German)
Math. Lehren 33, No. 196, 22-27 (2016).
Classification: G43 D53 D83
9
Making Platonic works of art. (Platonische Kunstwerke bauen.) (German)
PM Prax. Math. Sch. 58, No. 69, 35-40 (2016).
Classification: G43 U63 M83
10
A supplement to Haga’s theorem. II. (Eine Ergänzung zum Satz von Haga. II.) (German)
Wurzel 50, No. 7, 158-162 (2016).
Classification: G40 G50
11
Experimental geometry: a new look into old books. (Experimentelle Geometrie: ein neuer Blick in alte Bücher.) (German)
Math. Lehren 33, No. 196, 44-46 (2016).
Classification: G40 D40 A30 U20
12
A supplement to Haga’s theorem. I. (Eine Ergänzung zum Satz von Haga. I.) (German)
Wurzel 50, No. 6, 124-127 (2016).
Classification: G40 G50
13
In dark caves. Whole-body experience of rotations. (In dunklen Höhlen. Drehungen ganzkörperlich erfahren.) (German)
Mathematik 5 bis 10 35, 14-15 (2016).
Classification: G23 G43 D83 M93
14
Another material! Why angular stones of all things? (Noch’n Material! Warum ausgerechnet Winkelsteine?) (German)
Math. Differ. 7, No. 1, 40-45 (2016).
Classification: G22 D42 G42 U62
15
A geometric paradox. (Ein geometrisches Paradoxon.) (German)
MNU J. 69, No. 1, 14-18 (2016).
Classification: G74 E54 D74
16
Using digital technology to see angles from different angles. II: Openings and turns. (English)
Aust. Prim. Math. Classr. 20, No. 2, 3-9 (2015).
Classification: G40 U70
17
The angles at the base of an isosceles triangle. (Gli angoli alla base di un triangolo isoscele.) (Italian)
Archimede 67, No. 4, 193-196 (2015).
Classification: G40
18
Teaching about angles and triangles for 3rd grade students using origami. (English)
Rogerson, Alan (ed.), The mathematics education for the future project. Proceedings of the 13th international conference ‘Mathematics education in a connected world’, Catania, Sicily, Italy, September 16‒21, 2015. Münster: WTM-Verlag (ISBN 978-3-942197-44-1/pbk; 978-3-942197-86-1/ebook). Conference Proceedings in Mathematics Education 1, 11-17 (2015).
Classification: G42 U62
19
Young children’s angle size estimation in dynamic geometry environment. (English)
Amado, Nélia (ed.) et al., Proceedings of the 12th international conference on technology in mathematics teaching, ICTMT 12. Faro: University of Algarve (ISBN 978-989-8472-68-7). 438-445 (2015).
Classification: U70 G40 C30 C50
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