Development of Adobe Flash Learning Media Based on Cooperative Learning to Improve Student’s Spatial Ability at Chandra Kumala Secondary School

Spatial ability supports the results of student mathematics learning especially on geometry topics related to shape and space. The purpose of this study was to look at the quality of the development of learning media assisted by Adobe Flash based on cooperative learning to improve student’s spatial abilities. This study is development research using 4-D model (define, design, develop, and disseminate) in two classes of 30 students at Secondary School at Chandra Kumala Deli Serdang and it has two trials for the developing step. The quality of development is assessed from several aspects, namely validity, practicality, effectiveness of media development and increasing the value of student's spatial abilities. The results showed that the media development validity score was 2.89 (criteria: valid).
Practicality has met the practical criteria reviewed by the teacher questionnaire with an average score of 2.65 in trials I and 2.98 in trial II, and responses of students with an average score of 2.75 in trials I and 2.85 in trial II which means good responses. Effectiveness fulfills the effective criteria, namely in terms of the completeness of student learning classically has reached 86.7% in the trial II (in the trial I only 76.7%) and the use of research time according to the implementation plan of learning. Whereas Ngain increases the spatial ability of students using learning media
developed in trial I in the low category with a score of 0.13, but in the moderate category with a score of 0.34 in the trial II. Furthermore, the average value increased from the first trial of 71.32 to 77.13 in the second trial.