1994
DOI: 10.1016/0732-3123(94)90022-1
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Mathematical modeling as a component of understanding ratio-as-measure: A study of prospective elementary teachers

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Cited by 69 publications
(39 citation statements)
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“…ISSN: 1300-5340 http://www.efdergi.hacettepe.edu.tr/ In this respect, it is observed that while determining whether the slope is negative or zero, students mainly rely on the conceptualization of behavior indicator. Simon and Blume's (1994) suggestion that for the purpose of understanding of slope as a measurement, ramps with the same slopes but different sizes can be used for the purpose of recognizing that slope is a ratio between height and horizontal distance shows consistency with the results of this study. In fact, during the interviews where S1 and S4 had difficulties in making sense of the slope as a ratio when the height and horizontal distance changed, they emphasized that slope changes as well and they weren't able to interiorize to the concept of slope with the ratio between height and horizontal distance which remained constant.…”
Section: Discussionsupporting
confidence: 78%
See 1 more Smart Citation
“…ISSN: 1300-5340 http://www.efdergi.hacettepe.edu.tr/ In this respect, it is observed that while determining whether the slope is negative or zero, students mainly rely on the conceptualization of behavior indicator. Simon and Blume's (1994) suggestion that for the purpose of understanding of slope as a measurement, ramps with the same slopes but different sizes can be used for the purpose of recognizing that slope is a ratio between height and horizontal distance shows consistency with the results of this study. In fact, during the interviews where S1 and S4 had difficulties in making sense of the slope as a ratio when the height and horizontal distance changed, they emphasized that slope changes as well and they weren't able to interiorize to the concept of slope with the ratio between height and horizontal distance which remained constant.…”
Section: Discussionsupporting
confidence: 78%
“…Cheng (2010), emphasizes on the relationship between proportional reasoning skills and the constructing the concept of slope and reached the conclusion that students, not being able to form the concept of ratio meaningfully, were able to learn concept only practically. Simon and Blume (1994) conducted a teaching experiment with prospective elementary teachers and asserted that using various ramps, having same slope, can be important in order students conceptualize the slope as a ratio. Lobato and Thanheiser (2002) conducted a teaching experiment with high school students and concluded that there are four components in teaching process of the concept of slope: isolating the attribute that is being measured, determining which quantities affect the attribute and how understanding the characteristics of a measure, constructing a ratio.…”
Section: The Concept Of Slopementioning
confidence: 99%
“…Bunun sebebinin de ders kitaplarının içeriğinin yanında eğimin informel olarak da olsa deneyime girilen bir kavram olmasının sağladığı avantaj olabileceğine dikkat çekilmektedir. Simon ve Blume (1994) ise oranın bir ölçüm olarak anlaşılmasını araştırdığı çalışmasında, sınıf öğretmeni adaylarından oluşan katılımcıların eğim kavramının öğrenilmesi sırasında yaşadıkları başlıca güçlükleri ortaya koymuştur. Oranın bir ölçüm olarak ortaya konulmasını gerektiren eğim hesaplama durumunda öğrencilerin eğimi, dikey mesafe ile yatay mesafe arasındaki fark ile hesaplamaya çalıştıkları ancak bu ölçümün eğim için uygun olmadığını tespit ettikten sonra oransal ilişkiye odaklanarak eğim için dikey ile yatay mesafe arasındaki oranın doğru bir ölçüm olduğu sonucuna ulaştıkları görülmüştür.…”
Section: İlişkili Alanyazınunclassified
“…Bu konuda var olan çalışmaların çoğunluğu ise lise ve üniversite öğrencileri ile yürütülmüştür (ör. Simon ve Blume, 1994;Lobato ve Thanheiser, 2002;Tabaghi vd., 2009;Moore-Russo vd., 2011;Duncan ve Chick, 2013) . Lise ve üniversite yıllarında eğim kavramında ve eğimin önkoşul oluşturduğu türev kavramında yaşanan güçlüklerin (ör.…”
Section: Introductionunclassified
“…Ratios and proportional relationships have a pivotal role in elementary and secondary mathematics education (e.g., Kilpatrick, Swafford, & Findell, 2001;Lamon, 2007, Lesh, Post, & Behr, 1988National Council of Teachers of Mathematics, 2000) and provide the foundations for diverse topics such as linear functions, slope, geometric similarity, and probability (e.g., BenChaim, Keret, & Ilany, 2012;Lobato & Ellis, 2010;Simon & Blume, 1994). Lesh et al (1988) gave utmost importance to proportional reasoning as the capstone of elementary mathematics and the cornerstone of high school mathematics.…”
Section: Introductionmentioning
confidence: 99%