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Öğretmen Adaylarının İki Niceliğin Eş Zamanlı Değişimini İçeren Dinamik Fonksiyonel Durumlar İçin Oluşturdukları Grafik Temsilleri
2020
Journal:  
Eğitimde Nitel Araştırmalar Dergisi
Author:  
Abstract:

Bu araştırma, ilköğretim matematik öğretmeni adaylarının iki değişkenin eş zamanlı değişimini içeren dinamik fonksiyonel durumları yorumlarken değişkenler arasındaki ilişkiyi grafik temsilleri aracılığıyla nasıl ifade ettiklerini ortaya çıkarmayı amaçlamaktadır. Bütüncül bir durum çalışması olan bu çalışmanın katılımcıları, bir devlet üniversitesinde öğrenim gören 100 ilköğretim matematik öğretmeni adayıdır. Veriler, içine su ile doldurulan iki farklı özellikteki şişeye ait yükseklik-hacim grafiğinin çizilmesini gerektiren bir dinamik fonksiyonel durum etkinliği için yapılan yazılı açıklamalar, grafik çizimleri ve klinik görüşmeler yoluyla elde edilmiştir. Bulgular, sadece altı öğretmen adayının grafik temsillerinin her iki durum için de doğru olduğunu göstermiştir. Grafik temsillerinde tespit edilen belirgin hatalar ve eksiklikler şunlar olmuştur: (i) değişkenler arasındaki farklı doğrusal ilişkiler için eğimleri koordine edememe, (ii) değişkenler arasındaki doğrusal olmayan ilişkileri doğrusal temsil etme, (iii) bağımlı ve bağımsız değişkenlerin rollerini değiştirerek temsil etme, (iv) değişkenler arasındaki ilişkiyi artan yerine azalan şekilde temsil etme ve (v) değişkenler arasındaki ilişkiyi verilen dinamik fonksiyonel durumun gerektirdiğinden daha az veya fazla sayıda bölüm içerecek biçimde temsil etme.

Keywords:

Graphic representations created by teachers candidates for dynamic functional situations that include the simultaneous change of two quantities
2020
Author:  
Abstract:

This study aims to reveal how primary math teacher candidates express the relationship between the variables through graphic representations while interpreting the dynamic functional situations that involve simultaneous change of two variables. The participants of this study, a comprehensive case study, are 100 candidates for primary mathematics teachers who study at a state university. The data was obtained through written descriptions, graphic drawings and clinical interviews for a dynamic functional state effect that requires the drawing of the height-focus graph of the bottle with two different features filled with water. The findings showed that only six teacher candidates' graphic representations were correct for both cases. The obvious errors and shortcomings identified in the graphic representations were: (i) incapacity to coordinate the currents for different linear relations between the variables, (ii) linear representation of the non-linear relations between the variables, (iii) representation by changing the roles of dependent and independent variables, (iv) representation of the relationship between the variables instead of increasing and (v) representation of the relationship between the variables in a manner that contains less or more parts than the dynamic functional status requires.

Keywords:

Prospective Teachers’ Graphical Representations For Two Simultaneously Changing Quantities In Dynamic Functional Situations
2020
Author:  
Abstract:

This study aims to reveal how prospective teachers express the relationships between variables through graphical representations when interpreting dynamic functional situations involving two simultaneously changing quantities. 100 prospective middle school mathematics teachers participated to this case study. The data consisted of prospective teachers’ written responses to the task involving filling bottles with water and the graphs of volume as a function of height and clinical interviews were used to examine their covariational reasoning and graphing abilities. The findings showed that only six prospective teachers' graphical representations were correct for both dynamic functional situations. The most significant and common problems in the graphical representations were found such as (i) inability to coordinate slopes for linear relationships between variables, (ii) representing nonlinear relations of variables as linear relations, (iii) reversing the roles of dependent and independent variables, (iv) representing the relationship between variables as decreasing rather than increasing and (v) representing the relationships between variables to include more or less partitions to the graph than required by the given dynamic functional situation.

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Eğitimde Nitel Araştırmalar Dergisi

Field :   Eğitim Bilimleri

Journal Type :   Uluslararası

Metrics
Article : 383
Cite : 4.089
2023 Impact : 0.2
Eğitimde Nitel Araştırmalar Dergisi