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Let the spheres roll! Student activation through intraclassroom-grouping approaches to analytic geometry. (Lasst die Kugeln rollen! Schüleraktivierung durch binnendifferenzierte Zugänge zum Thema Analytische Geometrie.) (German)
PM Prax. Math. Sch. 58, No. 70, 34-36 (2016).
Classification: D44 G74
1
Angle bisectors: an algebraic approach. (English)
Consortium 110, 1-2 (2016).
Classification: G70
2
Virtual worlds supporting concept formation in spatial geometry. Mathematics teaching with 3D software. (Virtuelle Welten zur Förderung der Begriffsbildung in der Raumgeometrie. Mathematikunterricht mit 3-D-Software.) (German)
PM Prax. Math. Sch. 58, No. 69, 15-20 (2016).
Classification: G70 G40 U70
3
Sphere, cone, shearing, and stereographic projection. (Kugel, Kegel, Scherung und stereographische Projektion.) (German)
Mathematikinformation 64, 33-56 (2016).
Classification: G50 G60 G70 M50
4
Constructing and animating metamorphoses of polyhedra. (Polyeder-Metamorphosen konstruieren und animieren.) (German)
MNU J. 69, No. 1, 21-25 (2016).
Classification: G40 U70
5
Christmas stars. (Weihnachtssterne.) (German)
Wurzel 49, No. 12, 268-275 (2015).
Classification: G40 A20 U60
6
Serre \& Grothendieck. (Serre \& Grothendieck.) (German)
Wurzel 49, No. 12, 258-263 (2015).
Classification: A30 H70 I90
7
Optimal sphere-packings and the sausage catastrophe. (Optimale Kugelpackungen und die Wurstkatastrophe.) (German)
Wurzel 49, No. 5, 90-96 (2015).
Classification: G90 G40 N60
8
Mutually tangent spheres in $n$-space. (English)
Math. Mag. 88, No. 2, 146-150 (2015).
Classification: G40
9
Letters from geometry to mathematics. (Briefe der Geometrie an die Mathematik.) (German)
IBDG, Inf.bl. Geom. 34, No. 1, 25-38 (2015).
Classification: G10 M50 M60
10
Sections through cubes, spheres and cones. (Schnitte durch Würfel, Kugel und Kegel.) (German)
Math. Lehren 32, No. 190, 26-31 (2015).
Classification: G44 G74 D84 G43 G73 D83 Reviewer: Renate Stürmer (Zweibrücken)
11
Relating the interior of certain geometric figures to their boundary via differentiation. (English)
Math. Comput. Educ. 49, No. 1, 33-46 (2015).
Classification: I40 I60 G30 G90
12
On the way to spherical geometry. (Auf dem Weg zur sphärischen Geometrie.) (German)
Mathematikunterricht 61, No. 2, 40-45 (2015).
Classification: G63 G93 U63
13
Optimising ‒ not only with differential calculus! (Optimieren ‒ nicht nur mit Differentialrechnung.) (German)
Mathematikunterricht 61, No. 1, 14-19 (2015).
Classification: N63 G33 G43 G93 H33
14
Pencils of planes and spheres in problem solving. (English)
Acta Math. Nitriensia 1, No. 1, 57-62 (2015).
Classification: G44 D44
15
Squeezing bubbles into corners. (English)
Math. Teach. (Reston) 107, No. 6, 473-477 (2014).
Classification: G40 I30
16
Complex Descartes circle theorem. (English)
Am. Math. Mon. 121, No. 10, 927-931 (2014).
Classification: G75
17
A 3-D analog of Steiner’s porism. (English)
Math. Mag. 87, No. 2, 95-99 (2014).
Classification: G45 G95
18
Fundamental questions of navigation. A contribution to vector geometry. (Grundfragen der Navigation. Ein Beitrag zur Vektorgeometrie.) (German)
MNU, Math. Naturwiss. Unterr. 67, No. 5, 265-269 (2014).
Classification: G74 M54
19
On cubes and spheres. Volume calculations ‒ reasoning and understanding connections. (Von Würfeln und Kugeln. Volumenberechnungen ‒ Begründen und Zusammenhänge verstehen.) (German)
Mathematik 5 bis 10 2014, No. 26, 38-41 (2014).
Classification: G33 E53 D83
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