Textbook representations of radian angle measure: The need to build on the quantitative view of angle

2020 ◽  
Vol 120 (1) ◽  
pp. 15-28
Author(s):  
Hanan Alyami
Keyword(s):  



2014 ◽  
Vol 34 (10) ◽  
pp. 1012003
Author(s):  
陈海平 Chen Haiping ◽  
李佳斌 Li Jiabin ◽  
刘长春 Liu Changchun ◽  
熊召 Xiong Zhao ◽  
周海 Zhou Hai ◽  
...  


2008 ◽  
Vol 22 (11-12) ◽  
pp. 717-721 ◽  
Author(s):  
Knut Kvaal ◽  
Sergei V. Kucheryavski ◽  
Maths Halstensen ◽  
Simen Kvaal ◽  
Andreas S. Flø ◽  
...  


2013 ◽  
Vol 718-720 ◽  
pp. 517-520
Author(s):  
You Hang Zhou ◽  
Qiao Zhang

Angle Measure Technique (AMT) algorithm is proposed to analyze the quality of batch drilling process in this paper. The groups spindle power (SP) signals of batch drilling were preprocessed by the normalization method, and then the AMT was used to extract the scale features of monitor signals from local to global. By the method of Principal Component Analysis (PCA), the dimensionality of these scale features was reduced to obtain a distribution of the step quality of batch drilling. The results indicate that this method can be used for observation of high precision cutting step quality.



2017 ◽  
Vol 92 (1) ◽  
pp. 135-163 ◽  
Author(s):  
Martin Obst


2014 ◽  
Vol 45 (1) ◽  
pp. 102-138 ◽  
Author(s):  
Kevin C. Moore

A growing body of literature has identified quantitative and covariational reasoning as critical for secondary and undergraduate student learning, particularly for topics that require students to make sense of relationships between quantities. The present study extends this body of literature by characterizing an undergraduate precalculus student's progress during a teaching experiment exploring angle measure and trigonometric functions.







1971 ◽  
Vol 64 (7) ◽  
pp. 595-600
Author(s):  
Stanley R. Clemens

There are basically two approaches to classical Euclidean plane geometry—the synthetic approach and the metric approach. The older of the two is the synthetic approach followed by Eucliding later by Hilbert. In the Eucliding treatment, one begin by assuming as undefined the relations of betweenness, congruence of segments, and congruence of angles. The metric treatments, initiated by G. D. Birkhoff in the 1930s, assumes the existence of the real numbers (or a set of postulates that guarantees the existence of the real numbers) and the existence of a distance function d and an angle-measure function m.



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