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What does still fit into it? Modelling with pyramid-shaped tea bags. (Was passt da noch rein? Modellieren mit pyramidenförmigen Teebeuteln.) (German)
PM Prax. Math. Sch. 58, No. 69, 21-25 (2016).
Classification: G40 U70
1
Christmas stars. (Weihnachtssterne.) (German)
Wurzel 49, No. 12, 268-275 (2015).
Classification: G40 A20 U60
2
Platonic solids. Geometric concept formation, art and inclusion in one project. (Platonische Körper. Geometrische Begriffsbildung, Kunst und Inklusion in einem Projekt.) (German)
Mathematik 5 bis 10 32, 22-25 (2015).
Classification: M83 G93 G43
3
Making limits “experienceable". Developing fundamental conceptions with the help of experiments. (Grenzwerte “erlebbar" machen. Grundvorstellungen mithilfe von Experimenten aufbauen.) (German)
PM Prax. Math. Sch. 57, No. 65, 33-40 (2015).
Classification: I24 I34 D44 D84
4
The dancing polyhedra by Ueli Wittorf. (Die tanzenden Polyeder des Ueli Wittorf.) (German)
Spektrum Wiss. 8, 66-69 (2014).
Classification: G40 U60 A20 M80
5
Collective jamming and the horned octahedron. (Kollektive Verklemmung und das gehörnte Oktaeder.) (German)
Spektrum Wiss. 2012, No. 2, 68-72 (2012).
Classification: G90 G40
6
Equal-faced tetrahedra and equal-faced octahedra. (Gleichflächige Tetraeder und gleichflächige Oktaeder.) (German)
IBDG, Inf.bl. Geom. 31, No. 2, 31-36 (2012).
Classification: G40 G80
7
Flexible octahedra with elements at infinity. (Flexible Oktaeder mit Fernelementen.) (German)
IBDG, Inf.bl. Geom. 31, No. 2, 28-30 (2012).
Classification: G40 G80 G90 U60
8
Four-dimensional geometry. The eleven-cell. (Vierdimensionale Geometrie. Das Elfzell.) (German)
Spektrum Wiss. 2009, No. 8, 68-71 (2009).
Classification: G40
9
Varignon’s theorem for octahedra and cross-polytopes. (English)
Math. Mag. 82, No. 3, 209-215 (2009).
Classification: G40 G70
10
Slide-together models. (Steckmodelle.) (German)
Mathematikunterricht 55, No. 1, 38-47 (2009).
Classification: G40 U60
11
What do tetrahedra and octahedra have to do with each other? (Was haben Tetraeder und Oktaeder miteinander zu tun?) (German)
MNU, Math. Naturwiss. Unterr. 61, No. 5, 279-281 (2008).
Classification: G30 G20
12
A truncated octahedron. (Octaèdre tronqué.) (French)
Hypercube, No. 31, 16-17 (2000).
Classification: G40
13
Platon’s solids. (Les solides de Platon.) (French)
Cosinus, No. 3, 4-7 (2000).
Classification: G40
14
Tetrahedron and octahedron fractals. (English)
Int. J. Math. Educ. Sci. Technol. 29, No. 3, 329-341 (1998).
Classification: I94
15
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Result 1 to 15 of 15 total

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