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The cone ‒ a special pyramid. Independently developing the formula to calculate a cone’s volume. (Der Kegel ‒ eine spezielle Pyramide. Die Formel zur Berechnung des Kegelvolumens selbstständig erarbeiten.) (German)
Mathematik 5 bis 10 36, 30-33 (2016).
Classification: G33 D83
1
Making Platonic works of art. (Platonische Kunstwerke bauen.) (German)
PM Prax. Math. Sch. 58, No. 69, 35-40 (2016).
Classification: G43 U63 M83
2
Giving more space to geometry. Ideas for the third dimension. (Der Geometrie mehr Raum geben: Ideen für die dritte Dimension.) (German)
PM Prax. Math. Sch. 58, No. 69, 2-7 (2016).
Classification: G40 U60 U70 C30
3
Fair dice?! Platonic solids as a reason for problem solving. (Faire Würfel?! Platonische Körper als Anlass zum Problemlösen.) (German)
Math. Lehren 33, No. 196, 10-12 (2016).
Classification: D50 G40 K50
4
From a square to a pyramid. (Vom Quadrat zur Pyramide.) (German)
Mathematik 5 bis 10 34, 46-47 (2016).
Classification: G43
5
Platonic fractals. Building nice mathematics together. (Platonische Fraktale. Gemeinsam schöne Mathematik bauen.) (German)
Math. Lehren 32, No. 193, 23-25 (2015).
Classification: I93 D83 Reviewer: Renate Stürmer (Zweibrücken)
6
Mathworld. From the plane in the space. Figures and solids. (MatheWelt. Von der Ebene in den Raum. Figuren und Körper.) (German)
Math. Lehren 32, No. 190, 16 p., pull-out section (2015).
Classification: G43 U63 Reviewer: Renate Stürmer (Zweibrücken)
7
18 at least and complete. Exploring Archimedian solids by constructing the edges. (Endlich 18 und vollzählig. Archimedische Körper über den Bau der Ecken erkunden.) (German)
Math. Lehren 32, No. 190, 32-35 (2015).
Classification: G43 G44 D83 D84 Reviewer: Renate Stürmer (Zweibrücken)
8
3D printing: hands and minds on! From the spatial construction to the printed model. (3D-Druck: Hands and minds on! Von der räumlichen Konstruktion zum gedruckten Modell.) (German)
Math. Lehren 32, No. 190, 18-21 (2015).
Classification: G43 D83 U63 Reviewer: Renate Stürmer (Zweibrücken)
9
Triangles as developments of tetrahedras. (Dreiecke als Tetraedernetze.) (German)
Math. Lehren 32, No. 190, 14-17 (2015).
Classification: G43 D83 Reviewer: Renate Stürmer (Zweibrücken)
10
Let’s look further at ‘seeing’ and ‘doing’. (English)
Equals, Anniversary Edition, 27-29 (2014).
Classification: F32 F36 G22 G26 D42 D46
11
On the way to spherical geometry. (Auf dem Weg zur sphärischen Geometrie.) (German)
Mathematikunterricht 61, No. 2, 40-45 (2015).
Classification: G63 G93 U63
12
The dancing polyhedra by Ueli Wittorf. (Die tanzenden Polyeder des Ueli Wittorf.) (German)
Spektrum Wiss. 8, 66-69 (2014).
Classification: G40 U60 A20 M80
13
Exploring students’ mental models in linear algebra and analytic geometry: obstacles for understanding basic concepts. (English)
Nicol, Cynthia (ed.) et al., Proceedings of the 38th conference of the International Group for the Psychology of Mathematics Education “Mathematics education at the edge", PME 38 held jointly with the 36th conference of PME-NA, Vancouver, Canada, July 15‒20, 2014, Vol. 5. [s. l.]: International Group for the Psychology of Mathematics Education (ISBN 978-0-86491-360-9/set; 978-0-86491-365-4/v.5). 121-128 (2014).
Classification: H64 G74 C34
14
Mathematical aspects of the equation of time. (Mathematische Aspekte der Zeitgleichung.) (German)
MNU, Math. Naturwiss. Unterr. 67, No. 3, 168-176 (2014).
Classification: M50 G60 I40 I50
15
Sun, moons, planets. Astronomical construction kits and their basics. (Sonne, Mond, Wandelsterne. Astronomische Bausätze und ihre Grundlagen.) (German)
IBDG, Inf.bl. Geom. 32, No. 2, 28-32 (2013).
Classification: M50 G40 G60 U60
16
Eulerian paths in three dimensions ‒ an action-oriented approach for lower secondary students. (Eulersche Wege dreidimensional ‒ ein handlungsorientierter Zugang für Sekundarstufe I.) (German)
PM Prax. Math. Sch. 55, No. 54, 34-39 (2013).
Classification: K33 U63
17
Geometry to pop up. Platonic solids reveal their symmetry. (Geometrie zum Klappen. Platonische Körper enthüllen ihre Symmetrie.) (German)
Math. Lehren 30, No. 181, 24-26 (2013).
Classification: G43 D43 Reviewer: Renate Stürmer (Zweibrücken)
18
Archimedean solids with holes. (Archimedische Körper mit Löchern.) (German)
MNU, Math. Naturwiss. Unterr. 66, No. 8, 469-474 (2013).
Classification: G40 U60
19
Spatial imagination and mathematics education ‒ hands-on activities that make sense. (Raumvorstellung und Mathematikunterricht ‒ Aktivitäten mit Hand und Verstand.) (German)
Mathematikunterricht 59, No. 3, 39-50 (2013).
Classification: G40 G70 U60 U70
20
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