دراسات في التخلف العقلي

Comparing the Effectiveness and

Efficiency of Two Methods of

Teaching Geometric Shape Concepts

to Students with Mental Retardation

Rüya Güzel ÖZMEN*, Hilmi ÜNAL**

Abstract

The purpose of this study was to compare the effectiveness and efficiency of

two teaching models, the expository presentation of Merrill and Tennyson’s

model and Gagne’s model, in acquisition and maintenance of square and triangle

concepts in students with mental retardation. The participants of the study

were chosen from students with mental retardation who attended a private special

education center located in Kahramanmaras. Three boys and one girl participated

in the research. The design of the study was an adapted alternating treatment

design. Two criterion referenced tests were developed and administrated

to assess the discrimination levels of square and triangle in participating students.

The results of the study showed that the Gagne model was more effective

than the Merrill and Tennyson model on the concept acquisition and maintenance

in two of the participants. However, the effectiveness of two models

did not differ significantly in the remaining two participants. Both models were

equally effective with these students. The results also showed that the Gagne

model required less teaching time with three participating students compared

to the Merrill and Tennyson model. Results of the study were discussed

and recommendations for further research were provided.

Key Words

Concept Acquisition, Instructional Effectiveness, Mental Retardation

2008 E¤itim Dan›flmanl›¤› ve Araflt›rmalar› ‹letiflim Hizmetleri Tic. Ltd. fiti.

Correspondence: Associate Prof. Rüya Güzel ÖZMEN, Gazi University, Education Faculty, L Blok

Teknik okullar Ankara-Turkey/

E-mail: ruyaozmen@hotmail.com

**Hilmi ÜNAL, MA., Ya¤mur Su Özel E¤itim Okulu Kahramanmarafl-Turkey

E-mail: unalhilmi@mynet.com

Educational Sciences: Theory & Practice

8 (2) • May 2008 • 669-680

المقارنة بين الفعالية والكفاءة الخاصة باثنين من الأساليب

المستخدمة فى تدريس المفاهيم الهندسية الخاصة

بالطلاب الذين يعانون من مرض

التخلف العقلى

رويا جوزيل أوزمين*، حلمى أونال**

التعريف المجرد

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رقم الدراسة 456263