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“Two reflections always result in a rotation." Examining reflections and rotations at a rectangle. (“Zwei Spiegelungen ergeben eine Drehung" Untersuchungen von Spiegelungen und Drehungen am Rechteck.) (German)
Grundsch. Math. 49, 20-23 (2016).
Classification: G52 G42 D42
1
An alternative Calculus I course. (English)
Math. Comput. Educ. 50, No. 2, 120-129 (2016).
Classification: I15 D45
2
Students’ conceptions of reflection: opportunities for making connections with perpendicular bisector. (English)
J. Math. Behav. 43, 35-52 (2016).
Classification: G40 G50
3
Exemplary high school mathematics teachers’ reflections on teaching: a situated cognition perspective on content knowledge. (English)
Int. J. Educ. Res. 78, 1-12 (2016).
Classification: C39 C49 D39 B50
4
Each mistake is a chance for learning! Independently realizing, analysing and correcting errors during work at learning stations. (Jeder Fehler ist eine Lernchance! Beim Stationenlernen Fehler selbst erkennen, analysieren und berichtigen.) (German)
Mathematik 5 bis 10 34, 6-9 (2016).
Classification: D43 D73 D83 G23
5
Constructing and animating metamorphoses of polyhedra. (Polyeder-Metamorphosen konstruieren und animieren.) (German)
MNU J. 69, No. 1, 21-25 (2016).
Classification: G40 U70
6
Challenging problems. A chessboard inside out. (Uitdagende problemen. Een schaakbord binnenstebuiten keren.) (Dutch)
Euclides 90, No. 6, 23-25 (2015).
Classification: G40 G50
7
An interesting geometric proof of Viviani’s theorem. (English)
Math. Comput. Educ. 49, No. 3, 166 (2015).
Classification: G40 G50 E50
8
Mathematics and education. (Mathematik und Bildung.) (German. English summary)
Math. Didact. 38, 67-91 (2015).
Classification: D20 D30 E20
9
Art according to recipe? A project on mathematics and concrete art. (Kunst nach Rezept? Ein Projekt zu Mathematik und konkreter Kunst.) (German)
Mathematik 5 bis 10 32, 30-33 (2015).
Classification: M83 G93 G53 F63
10
Escher tessellations. Investigating Escher tessellations: congruence and symmetry. (Escher-Parkettierungen. Erforschung von Escher-Parketten: Kongruenz und Symmetrie.) (German)
Mathematik 5 bis 10 32, 18-21 (2015).
Classification: M83 G93 G53
11
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
12
Through the looking glass: reflections and rotations in space. (English)
Math. Comput. Educ. 49, No. 2, 116-118 (2015).
Classification: G75 I45
13
Report from the MMA: rooms that cannot be illuminated. (Bericht von der MMA: Unbeleuchtbare Räume.) (German)
Monoid 35, No. 121, 3-7 (2015).
Classification: G40 G50 G90 M50
14
IMP 2014. (English)
Math. Teach. (Derby) 246, 30-35 (2015).
Classification: G40 G50 F60
15
Mathematics in unusual places. I: Manhole covers. (English)
Equals, Anniversary Edition, 12-15 (2014).
Classification: G20 G40 M90 D70
16
Optimum partition of a triangle. (Optimale Teilung eines Dreiecks.) (German)
Mathematikunterricht 61, No. 3, 24-31 (2015).
Classification: G40 D50 I40
17
Dynamic reflections on a well-known type of problems about rectangular enclosures with the largest area under the integration of existing walls. (Dynamische Betrachtungen zu einer bekannten Aufgabe über das flächengrößte, rechteckige Gehege unter Einbindung vorhandener Mauern.) (German)
Mathematikunterricht 61, No. 1, 4-13 (2015).
Classification: G30 G40 G90 H30
18
Chaos on the billiard table. (Chaos auf dem Billardtisch.) (German)
Spektrum Wiss. 9, 16-22 (2014).
Classification: A30 M50 I90 K50
19
Scratch it out! Enhancing geometrical understanding. (English)
Teach. Child. Math. 21, No. 3, 185-188 (2014).
Classification: G52 U72
20
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