摘要：It was aimed at conducting the implementation and evaluatio n of a web based instructional material which was designed for level of 3rd grade elementary students. The material consisting of animated videos was evaluated by 48 teacher candidates. An experimental study was carried out and the mathematical content was described by two different methods in two different classes. Planar Shapes Comprehension Test (PSCT) was used in order to compare the learning levels of the students. Moreover, Animation Opinion Questionnaire (AOQ) was used in order to uncover student views on material. In the analysis of data, both a variety of statistical techniques and descriptive reports were employed. In conclusion, the developed material was observed as appropriate to be used in teaching environments, and it was effective in the learners' comprehension of abstract concepts
关键词：Spatial Thinking; Web-Based Teaching; Material Design
