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Sun crescents. (Sonnensicheln.) (German)
MNU J. 69, No. 5, 310-312 (2016).
Classification: M54 G44 G64
1
Angle between two vectors. Discovering a formula for angle calculation without using the law of cosines. (Winkel zwischen zwei Vektoren. Ohne Kosinussatz eine Formel zur Berechnung des Winkels entdecken.) (German)
PM Prax. Math. Sch. 57, No. 63, 36-38 (2015).
Classification: G74 G64 U74 D84
2
Visual-angle problem. (Sehwinkelproblem.) (German)
MNU, Math. Naturwiss. Unterr. 68, No. 5, 308-309 (2015).
Classification: G64 I44 M54
3
Brilliant ideas of great mathematicians. VIII: Al-Biruni’s method of measuring the globe. (Geniale Ideen großer Mathematiker. VIII: al-Birunis Methode zur Vermessung der Erdkugel.) (German)
MNU, Math. Naturwiss. Unterr. 68, No. 5, 278-281 (2015).
Classification: A30 M54 G44 G64
4
My high school math notebook, Vol. 2. (English)
Columbus, OH: Educational Publisher (ISBN 978-1-59973-261-9/hbk). 111~p. (2014).
Classification: H13 H14 M13 M14 G63 G64
5
Sine, cosine \& co. Ideas for the teaching of trigonometry. (Seno, coseno \& co. Spunti e idee per una didattica della trigonometria.) (Italian)
QuaderniCIRD 8, 56-76, electronic only (2014).
Classification: G64
6
Paper foldings. (Blattfaltungen.) (German)
Math. Semesterber. 61, No. 1, 93-114 (2014).
Classification: G44 I44 G64 U64
7
Trigonometry in grades 9‒11. (Goniometrie in 3, 4 en 5.) (Dutch)
Uitwiskeling 29, No. 3, 9-45 (2013).
Classification: G63 G64
8
Geometrical proofs of some trigonometric identities. (Geometrijski dokazi nekih trigonometrijskih jednakosti.) (Serbian)
Nast. Mat. 58, No. 3-4, 31-34 (2013).
Classification: G64 Reviewer: Zoran Kadelburg (Beograd)
9
A geometric proof of some properties of the cycloid. (Una dimostrazione geometrica di alcune proprietà della curva cicloide.) (Italian)
Archimede 65, No. 1, 7-14 (2013).
Classification: G64 M54 G74
10
Semiregular polygons. (Poligoni semiregolari.) (Italian)
Archimede 65, No. 2, 86-92 (2013).
Classification: G44 G64
11
$e^{iπ}+1=0$: a year 11 adventure. (English)
Math. Sch. (Leicester) 42, No. 1, 26-28 (2013).
Classification: I14 G64 D44 D84
12
Complex numbers method in plane geometry training techniques at secondary school. (English)
Burenkov, V. I. (ed.) et al., Progress in analysis. Proceedings of the 8th congress of the International Society for Analysis, its Applications, and Computation (ISAAC), Moscow, Russia, August 22‒27, 2011. Volume 3. Moscow: Peoples’ Friendship University of Russia (ISBN 978-5-209-04597-7/hbk). 217-220 (2012).
Classification: G44 G64 F54
13
Triangle theorems and a connection between sine and cosine functions. (Poučci o trokutu i veza između sinusa i kosinusa.) (Croatian)
Mat.-Fiz. List 63, No. 250, 83-85 (2012-2013).
Classification: G64 Reviewer: Dragan Blagojević (Beograd)
14
Viviani’s theorem: a possible generalization. (Teorema di Viviani: una possibile generalizzazione.) (Italian)
Archimede 64, No. 2, 80-87 (2012).
Classification: G44 G64 Reviewer: Claudio Bernardi (Roma)
15
Feynman’s triangle. (Il triangolo di Feynman.) (Italian)
Archimede 64, No. 1, 3-18 (2012).
Classification: G43 G44 G63 G64 E53 E54 Reviewer: Claudio Bernardi (Roma)
16
Partitioning Pythagorean triangles using Pythagorean angles. (English)
Coll. Math. J. 43, No. 3, 220-225 (2012).
Classification: G64
17
Tour of a simple trigonometry problem. (English)
Int. J. Math. Educ. Sci. Technol. 43, No. 4, 449-461 (2012).
Classification: G64 D54 R24
18
Machin’s formula and calculating $π$. (Machinova formula i izračunavanje broja $π$.) (Croatian)
Mat.-Fiz. List 62, No. 247, 187-189 (2011-2012).
Classification: G64 G44 Reviewer: Dragan Blagojević (Beograd)
19
What characterises high achieving students’ mathematical reasoning? (English)
Sriraman, Bharath (ed.) et al., The elements of creativity and giftedness in mathematics. Rotterdam: Sense Publishers (ISBN 978-94-6091-437-9/pbk; 978-94-6091-438-6/hbk, 978-94-6091-439-3/ebook). Advances in Creativity and Giftedness 1, 193-215 (2011).
Classification: C44 E54 H34 G64
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