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Combinatorics of the triangle inequality: from straws to experimental mathematics for teachers. (English)
Spreadsheets Educ. 9, No. 1, 18 p., electronic only (2016).
Classification: G99 K29 U79 G22
1
A paper about pentagon problems. (English)
Math. Compet. 27, No. 2, 7-33 (2014).
Classification: G40 U40 D50
2
Centroids of areas. (Flächenschwerpunkte.) (German)
MNU, Math. Naturwiss. Unterr. 67, No. 8, 466-467 (2014).
Classification: G40
3
An investigation of some properties of the general Haag polygon. (English)
Math. Sch. (Leicester) 43, No. 3, 15-18 (2014).
Classification: G90
4
Geometry with scissors. II: Cutting up a $k$-gon. (Geometrie mit der Schere. II: Zerschneidung eines $k$-Ecks.) (German)
Monoid 33, No. 116, 7-10 (2013).
Classification: G40 G90
5
The law of the lever for centre points. (Die Waagenformel für Mittelpunkte.) (German)
Wurzel 47, No. 11, 255-258 (2013).
Classification: G40 G90 I90 H70
6
Geometry with scissors. I: Cutting up a triangle. (Geometrie mit der Schere. I: Zerschneidung eines Dreiecks.) (German)
Monoid 33, No. 115, 13-17 (2013).
Classification: G40 G90
7
Golden section, Fibonacci numbers, and golden figures. (Goldener Schnitt, Fibonacci-Zahlen und Goldene Figuren.) (German)
Mathematikunterricht 58, No. 1, 5-12 (2012).
Classification: G40 I30 F50 F60 A30 N50 M80 H20
8
Fibonacci pegs and an angel theorem. (English)
Math. Sch. (Leicester) 41, No. 5, 10-11 (2012).
Classification: G40 Reviewer: Peter Dürr (Linkenheim)
9
The cornered becomes round. Reproducing a football. (Das Eckige wird zum Runden. Einen Fußball nachbauen.) (German)
Mathematik 5 bis 10, No. 21, 26-29 (2012).
Classification: G43 D43 D83 M93
10
Quadratically framed regular polygons. (Quadratisch gerahmte regelmäßige Vielecke.) (German)
MNU, Math. Naturwiss. Unterr. 65, No. 4, 203-206 (2012).
Classification: G40
11
5. (German)
Wurzel 46, No. 5, 94-97 (2012).
Classification: G40 G90 N70 K20
12
Some thoughts about geometries. (English)
Math. Sch. (Leicester) 40, No. 2, 23-26 (2011).
Classification: G40 G90 U70
13
Mathematical reasoning and scents making. (English)
Math. Teach. (Reston) 105, No. 2, 92-95 (2011).
Classification: M93 F93 K23
14
Different methods of proving one geometric theorem. (Različite metode dokazivanja jedne teoreme iz geometriji.) (Croatian. English summary)
MAT-KOL (Banja Luka) 17, No. 1, 13-24 (2011).
Classification: G40
15
Using theories to build kindergarten teachers’ mathematical knowledge for teaching. (English)
Rowland, Tim (ed.) et al., Mathematical knowledge in teaching. Berlin: Springer (ISBN 978-90-481-9765-1/hbk; 978-90-481-9766-8/ebook). Mathematics Education Library 50, 231-250 (2011).
Classification: B51 D29 E49
16
Parquets, symmetries, and Islamic art: Contributions to the acquisition of competences in structuring, networking, and presenting. (Parkette, Symmetrien und islamische Kunst: Beiträge zum Kompetenzwerwerb im Strukturieren, Vernetzen und Präsentieren.) (German)
Log In 29, No. 159, 37-54 (2009).
Classification: P40 G90 M80 U70
17
Christie’s cake. (English)
Math. Teach. Middle Sch. 14, No. 5, 297-299 (2008).
Classification: G93 G43 G33 Reviewer: Peter Dürr (Linkenheim)
18
Enrichment, computer mathematics and Maple. (Enrichment, Computermathematik und Maple.) (German)
Comput.algebra-Rundbr. 2008, Sonderheft, 18-21 (2008).
Classification: C90 U70 R20
19
Dynamic geometry with polygon pantographs: Students explore “virtual similarity machines”. (Dynamische Geometrie mit Vielecks-Pantographen: Schülerinnen und Schüler erkunden “virtuelle Ähnlichkeitsmaschinen”.) (German)
PM Prax. Math. Sch. 49, No. 18, 29-32 (2007).
Classification: G53 G43 U73 R23
20
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