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Discovering areas with jigsaw pieces. “The whole is greater than the sum of its parts" Aristotle (384‒322 B.C.). (Mit Puzzle-Teilen Flächen entdecken. “Das Ganze ist mehr als die Summe seiner Teile" Aristoteles (384‒322 v. Chr.).) (German)
PM Prax. Math. Sch. 56, No. 55, 21-23 (2014).
Classification: G33 G43 U63
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Surface area to volume ratio and metabolism: analysing small group-task as Vygotskian activity. (English)
Smith, C. (ed.), Proceedings of the British Society for Research into Learning Mathematics (BSRLM). Vol. 33, No. 3. Proceedings of the day conference, University of Edinburgh, UK, November 16, 2013. London: British Society for Research into Learning Mathematics (BSRLM). 25-30 (2013).
Classification: C30 C60
22
Living in 10000 dimensions. (Leben in 10000 Dimensionen.) (German)
Spektrum Wiss. 12, 75-79 (2013).
Classification: G40 G70 K40 K60
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Evolutes and involutes of spatial curves. (English)
Am. Math. Mon. 120, No. 3, 217-231 (2013).
Classification: G95
24
The hidden face of the vault: unveiling the expression of the avant-garde through the use of the sphere in Teposcolula’s open chapel. (English)
Nexus Netw. J. 15, No. 1, 107-125 (2013).
Classification: M80
25
How long does the sun shine on a clear day? (Wie lange scheint heute die Sonne?) (German)
Monoid 33, No. 116, 33-39 (2013).
Classification: M50 G60
26
Make four out of three ‒ from a triangle to a tetrahedron. (Aus Drei mach Vier ‒ Vom Dreieck zum Tetraeder.) (German)
Wurzel 47, No. 11, 242-245 (2013).
Classification: G40
27
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
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Spheres, cylinders and conces. (English)
SYMmetryplus, No. 52, 10-11 (2013).
Classification: G30 G40 Reviewer: Peter Dürr (Linkenheim)
29
Where the coordinates flow. (Wo die Koordinaten fließen.) (German)
PM Prax. Math. Sch. 55, No. 49, 47 (2013).
Classification: M50 G60
30
Observing and utilizing non-linear geometry. (Beobachten und Auswerten nicht linearer Geometrie.) (German)
Mathematikinformation, No. 58, 9-28 (2013).
Classification: G10 D30
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Geometry on spheres. A tangible, comprehensible and worthwhile experience. (Geometrie auf der Kugel. Eine (be-)greifbare und lohnenswerte Erfahrung.) (German)
Math. Lehren 30, No. 176, 49-52 (2013).
Classification: G43 D43 U63 Reviewer: Renate Stürmer (Zweibrücken)
32
Manifolds. The geometry of horizons. (Mannigfaltigkeiten. Die Geometrie der Horizonte.) (German)
Spektrum Wiss. 2012, No. 7, 60-67 (2012).
Classification: G90
33
An adventure in $n$ dimensions. (Ein Abenteuer in $n$ Dimensionen.) (German)
Spektrum Wiss. 2012, No. 8, 52-58 (2012).
Classification: G30 G40
34
17. II. (German)
Wurzel 46, No. 12, 258-265 (2012).
Classification: G40 G50 G90 K30
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Incircle tricuspids and insphere tetracuspids. (Inkreis-Dreispitz und Inkugel-Vierspitz.) (German)
IBDG, Inf.bl. Geom. 31, No. 1, 19-20 (2012).
Classification: G40
36
Operational genesis of geometry. (Operative Genese der Geometrie.) Reprint of the 1985 original. (German)
Berlin: epubli (ISBN 978-3-8442-2454-2/pbk). 464~p. (2012).
Classification: G10 C30 Reviewer: Andreas Filler (Berlin)
37
Geometry in mathematical Olympiads. (Geometrie in der Mathematik-Olympiade.) (German)
Mathematikinformation, No. 56, 40-47 (2012).
Classification: U40 G40 D50 E50
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Ball in a box. (English)
Math. Sch. (Leicester) 41, No. 1, 25-27 (2012).
Classification: G30 I40
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The earth quakes: modelling an earthquake in upper secondary lessons. (Die Erde bebt: Modellierung eines Erdbebens im Unterricht der S II.) (German)
MNU, Math. Naturwiss. Unterr. 65, No. 3, 138-142 (2012).
Classification: M54 G74
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Result 21 to 40 of 215 total

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