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Result 101 to 120 of 490 total

Picturing Newton’s formula for $π$. (English)
Math. Sch. (Leicester) 41, No. 5, 13 (2012).
Classification: G40 G60 A30
101
Trigonometric methods in solving specific algebras. (Procedimientos trigonométricos en la resolución de problemas específicos del álgebra.) (Spanish. English summary)
Bol., Soc. “Puig Adam" Profr. Mat., No. 90, 16-35 (2012).
Classification: H30 G60
102
Making the laws of sines and cosines a splash for students. (English)
Ohio J. Sch. Math. 2012, No. 65, 21-23 (2012).
Classification: G60 D50
103
The secrets of triangles. A mathematical journey. (English)
Amherst, NY: Prometheus Books (ISBN 978-1-61614-587-3/hbk; 978-1-61614-588-0/ebook). 387~p. (2012).
Classification: G60 A80 Reviewer: Robert Dawson (Halifax)
104
Cavalieri directions between two triangles. (Direcciones de Cavalieri entre dos triángulos.) (Spanish. English summary)
Bol., Soc. “Puig Adam" Profr. Mat., No. 92, 30-50 (2012).
Classification: G40 G60
105
The new triangle geometry: the passage from amateur mathematics to instructed mathematics. (Die neue Dreiecksgeometrie: Der Übergang von der Mathematik der Amateure zur unterrichteten Mathematik.) (German)
Math. Semesterber. 59, No. 1, 75-102 (2012).
Classification: A30 G40 G60 Reviewer: Silke Göbel (Berlin)
106
Exploring the mathematical model of the thumbaround motion by GeoGebra. (English)
Technol. Knowl. Learn. 17, No. 3, 109-114 (2012).
Classification: R20 M50 U70 G60
107
On periodicity of trigonometric functions and connections with elementary number theoretic ideas. (English)
Aust. Sr. Math. J. 26, No. 1, 50-63 (2012).
Classification: I20 G60
108
The use of multiple products of vectors in spherical trigonometry. (English)
Billich, Martin (ed.), Mathematica IV. Proceedings of the Polish-Czech-Slovak mathematical conference, Catholic University Ružomberok, Spišská Kapitula, Slovakia, June 5‒8, 2012. Ružomberok: Verbum, Catholic University in Ružomberok Press (ISBN 978-80-8084-954-2/pbk). Scientific Issues, 153-157 (2012).
Classification: G70 G60 G90
109
Basic trigonometric formulas in an inquiring approach. (English)
Billich, Martin (ed.), Teaching mathematics. III. Innovation, new trends, research. Proceedings of the mathematics and informatics didactics conference, Catholic University Ružomberok, Levoča, Slovakia, January 20‒22, 2012. Ružomberok: Verbum, Catholic University in Ružomberok Press (ISBN 978-80-8084-955-9/pbk). Scientific Issues, 5-13 (2012).
Classification: G60 D50 D40
110
A geometric method of finding trigonometric ratios of $22\frac12^{\circ}$ and $75^{\circ}$. (English)
Math. Sch. (Leicester) 41, No. 3, 22-23 (2012).
Classification: G60 F50
111
A harmonic moment. (English)
Math. Sch. (Leicester) 41, No. 3, 4 (2012).
Classification: G60
112
An expansion of the Pythagorean theorem. (Una ampliación al teorema de Pitágoras.) (Spanish)
Rev. Educ. Mat. 27, No. 3, 3-22 (2012).
Classification: G60 G40
113
On the theorem of al-Kashi. (Autour du théorème d’al-Kashi.) (French)
Losanges, No. 19, 25-33 (2012).
Classification: G60 G70 F50
114
Mathematical activities around the Leonardo bridge. (Mathematische Aktivitäten rund um die Leonardo-Brücke.) (German)
Schriftenr. Didakt. Math. Österr. Math. Ges. (ÖMG) 45, 67-86 (2012).
Classification: U60 D30 M80 G60
115
Area calculation in arbitrary triangles: a teaching proposal from working practices. (Cálculo de área de triângulos quaisquer: uma proposta a partir de práticas laborais.) (Portuguese. English summary)
Bol. GEPEM 36, No. 61, 153-158 (2012).
Classification: M50 G30 G60 M80
116
For the rehabilitation of teaching complex numbers. (Pour une réhabilitation de l’enseignement des nombres complexes.) (French)
Losanges, No. 18, 33-39 (2012).
Classification: F50 D30 G60
117
Daylight in the northern hemisphere. (English)
Consortium, No. 102, 12 p., pull-out section (2012).
Classification: M50 G60 I20
118
Some necessary and sufficient conditions for a triangle to be isosceles. (Cechy równoboczności trójkątów.) (Polish. English summary)
Ann. Univ. Paedagog. Crac. 110, Stud. Didact. Math. Pertin. 4, 83-92 (2012).
Classification: G60
119
Multiple proof approaches and mathematical connections. (English)
Math. Teach. (Reston) 105, No. 8, 586-593 (2012).
Classification: G60 G40 E50
120

Result 101 to 120 of 490 total

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