| Summary: | Many prior researches found that most of students in grade five tendedto have difficulty in fully grasping the concept of volume measurementbecause they have to build their competence in spatial structuring. The unit of volume “packing” measurement must be integrated andcoordinated in three-dimension. On the other hand, it is revealed theerrors that students made on the volume measurement tasks with threedimensional cube arrays are related to some aspects of spatialvisualization, such as the skill to "read off" two-dimensionalrepresentation of solid objects. For those reasons, this research is aimed to develop classroom activities with the use of spatial visualization tasks to support students’ spatial structuring in learning volume measurement. Consequently, design research was chosen as an appropriate means to achieve this research goal. In this research, a sequence of instructional activities is designed and developed based on the hypothesis of students’ learning processes. This research was conducted in grade 5 of SD Pupuk Sriwijaya Palembang, Indonesia
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