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Algorithms for drawing ellipses using GeoGebra. (English)
Math. Comput. Educ. 49, No. 3, 183-193 (2015).
Classification: G70 G80 U70
1
Travelling movements of the intersection points of certain triangle-transversals. II. (Wanderbewegungen der Schnittpunkte gewisser Dreieckstransversalen. II.) (German)
Wurzel 49, No. 3-4, 60-65 (2015).
Classification: G40 G70 U70
2
Travelling movements of the intersection points of certain triangle-transversals. I. (Wanderbewegungen der Schnittpunkte gewisser Dreieckstransversalen. I.) (German)
Wurzel 49, No. 2, 35-38 (2015).
Classification: G40 G70 U70
3
Non-parametric equations of straight lines in the Gauss plane. II. (Parameterfreie Geradengleichungen in der Gaußschen Zahlenebene. II.) (German)
Wurzel 48, No. 9-10, 216-221 (2014).
Classification: G70 F50
4
Barycenters of quadrangles. II. (Schwerpunkte von Vierecken. II.) (German)
Wurzel 48, No. 3-4, 74-81 (2014).
Classification: G40 G70
5
Barycenters of quadrangles. I. (Schwerpunkte von Vierecken. I.) (German)
Wurzel 48, No. 2, 35-41 (2014).
Classification: G40 G70
6
Plane algebraic curves. Transl. from the German by John Stillwell. Reprint of the hardback ed. 1986. (English)
Modern Birkhäuser Classics. Basel: Birkhäuser (ISBN 978-3-0348-0492-9/pbk; 978-3-0348-0493-6/ebook). x, 721~p. (2012).
Classification: G75 G85 G95 Reviewer: Franz Lemmermeyer (Jagstzell)
7
A different approach to generating conic sections. (English)
Pi Mu Epsilon J. 13, No. 4, 193-197 (2011).
Classification: G70 H60
8
The TI-Nspire and Lissajous figures. (English)
Math. Teach. (Reston) 103, No. 8, 613-615 (2010).
Classification: G60 G70 I20 U70
9
Making a pitch for slope. (English)
Math. Teach. (Reston) 103, No. 8, 557-561 (2010).
Classification: G43 U73 R23
10
Planes, ferries and cylinders ‒ some conic sections. (English)
Math. Teach. (Reston) 103, No. 2, 104-107 (2009).
Classification: G70 G40 M50 Reviewer: Peter Dürr (Linkenheim)
11
Envelopes: Analysing curve stitching pictures with Derive. (Hüllkurven: Fadenbilder analysieren mit Derive.) (German)
Mathematikunterricht 55, No. 3, 53-63 (2009).
Classification: M80 G70 I40 U70 R20
12
Interactive geometric constructions in the virtual space. Pt. 2: Applications, examples, and subject-didactic evaluation. (Interaktives geometrisches Konstruieren im virtuellen Raum. T. 2: Anwendungen, Beispiele und fachdidaktische Bewertung.) (German)
MNU, Math. Naturwiss. Unterr. 61, No. 4, 211-216 (2008).
Classification: G40 U70 D30 R20
13
Interactive geometric constructions in the virtual space. (Interaktives geometrisches Konstruieren im virtuellen Raum.) (German)
MNU, Math. Naturwiss. Unterr. 61, No. 3, 145-149 (2008).
Classification: G40 U70 D30 R20
14
Coordinate geometry and fundamentals of calculus: Application-oriented problem complexes. (Koordinatengeometrie und Grundlagen der Analysis: Anwendungsorientierte Aufgabenkomplexe.) (German)
MNU, Math. Naturwiss. Unterr. 61, No. 2, 83-89 (2008).
Classification: D54 I44 G74 M14
15
Addition of points in the plane. (Addition von Punkten in der Ebene.) (German)
Wurzel 42, No. 12, 258-263 (2008).
Classification: G90
16
Applying secant lines and tangent lines for the optimal placement of range lights. (English)
Math. Teach. (Reston) 101, No. 9, 682-689 (2008).
Classification: I44 M54
17
The lines problem. (English)
Math. Sch. (Leicester) 36, No. 4, 12-13 (2007).
Classification: G40 G90 D50 E50
18
A hyperbola and an important circle in tandem. (English)
Math. Educ. 40, No. 1, 32-35 (2006).
Classification: G70
19
How many points of intersection for n straight lines in the plane? (Wie viele Schnittpunkte werden von n Geraden in der Ebene erzeugt?) (German)
MNU, Math. Naturwiss. Unterr. 57, No. 4, 207-210 (2004).
Classification: G90 D50
20
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