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Result 1 to 20 of 56 total

Making Platonic works of art. (Platonische Kunstwerke bauen.) (German)
PM Prax. Math. Sch. 58, No. 69, 35-40 (2016).
Classification: G43 U63 M83
1
Angle perpendicular or mid-bisector? (Winkelsenkrechte oder Mittelhalbierende?) (German)
Wurzel 50, No. 7, 146-149 (2016).
Classification: G40
2
Origami geometry. (Origami-Geometrie.) (German)
Monoid 36, No. 126, 3-7 (2016).
Classification: G40 G90 E40
3
The special problem. The area of a dodecagon. (Die besondere Aufgabe. Die Fläche eines Zwölfecks.) (German)
Monoid 36, No. 126, 33-34 (2016).
Classification: G30 G40
4
Surveying around the Zirkelsee. Competition of the best constructors. (Vermessung um den Zirkelsee. Wettkampf der besten Konstrukteure.) (German)
PM Prax. Math. Sch. 58, No. 68, 39-41 (2016).
Classification: D53 G43 M53
5
Thunder and lightning: understanding equidistance. (English)
Math. Teach. (Reston) 108, No. 6, 454-460 (2015).
Classification: G43 U73 M93
6
How tall are you? ‒ experiencing congruence theorems with theodolites. (Wie groß bist du? ‒ Mit Theodoliten Kongruenzsätze erleben.) (German)
PM Prax. Math. Sch. 57, No. 64, 40-41 (2015).
Classification: G43 D83 U63
7
The geometric square. A surveying instrument for continuous use from grade 5 to 9. (Das Geometrische Quadrat. Ein Vermessungsinstrument zum kontinierlichen Einsatz von Klasse 5 bis 9.) (German)
PM Prax. Math. Sch. 57, No. 61, 6-11 (2015).
Classification: G43 U63
8
A crazy triangular surface formula. (Eine verrückte Dreiecksflächenformel.) (German)
Monoid 34, No. 120, 6-14 (2014).
Classification: G90
9
Orthocentre without altitudes. (Höhenschnittpunkt ohne Höhen.) (German)
Wurzel 48, No. 11, 247-249 (2014).
Classification: G40 G70
10
Shifting the paradigm? Beautifully moving. (English)
Math. Sch. (Leicester) 43, No. 5, 9-11 (2014).
Classification: U70 G40 D30
11
Interior angles of an octagon in a square. (Innenwinkel eines Achtecks im Quadrat.) (German)
Monoid 34, No. 119, 6-7 (2014).
Classification: G40
12
Circles into dodecagons. Through folding one can easily obtain a dodecagon from a circle ‒ explanation? (Kreise zu Zwölfecken. Durch Falten erhält man aus einem Kreis leicht ein Zwölfeck ‒ Begründung?) (German)
Mathematik 5 bis 10, No. 27, 32-33 (2014).
Classification: G43 D83 U63
13
Sponge-rubber triangles. Discoveries at triangles through placing and testing. (Moosgummidreiecke. Entdeckungen an Dreiecken durch Legen und Ausprobieren.) (German)
Mathematik 5 bis 10, No. 27, 22-25 (2014).
Classification: G43 D83 U63 G83
14
Analysing the Palestinian school mathematics textbooks: a multimodal (multisemiotic) perspective. (English)
Smith, C. (ed.), Proceedings of the British Society for Research into Learning Mathematics (BSRLM). Vol. 33, No. 2. Proceedings of the day conference, Sheffield Hallam University, UK, June 2, 2013. London: British Society for Research into Learning Mathematics (BSRLM). 70-75 (2013).
Classification: U23 E43 G43 G53
15
Learning congruency-based proofs in geometry via a web-based learning system. (English)
Smith, C. (ed.), Proceedings of the British Society for Research into Learning Mathematics (BSRLM). Vol. 33, No. 1. Proceedings of the day conference, University of Bristol, UK, March 2, 2013. London: British Society for Research into Learning Mathematics (BSRLM). 31-36 (2013).
Classification: G43 G53 E53 U73 U53
16
Symmetry ‒ a manifold concept. (Symmetrie ‒ ein vielfältiger Begriff.) (German)
Math. Differ. 4, No. 3, 10-13 (2013).
Classification: G22 G52 D32
17
When do we have a triangle? (Wann gibt’s ein Dreieck?) (German)
Math. Lehren, No. 172, 66-67 (2012).
Classification: G43 G53 U63
18
Arithmagons ‒ number puzzles for grade 5 and 8. (Arithmagone ‒ Zahlenrätsel für Klasse 5 und 8.) (German)
MNU, Math. Naturwiss. Unterr. 65, No. 8, 468-472 (2012).
Classification: U63 F33 D53 A23
19
“We survey our world." Using triangles to cover the school yard and as a mathematical model. (“Wir vermessen unsere Welt." Dreiecke über den Schulhof legen und als mathematisches Modell nutzen.) (German)
Mathematik 5 bis 10, No. 21, 22-25 (2012).
Classification: M53 G43 D43 D83
20
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