摘要：In guiding students to construct a mathematical concept themselves , learning process should be started by a context which is suit with the concept. In this research, we focused on structured arrangement which was believed to be able to support students ages 8 ¨C 9 years old deve loping splitting strategy in doing multiplic ation. This study was a design research underli n ed by tenets of Realistic Mathematics Education (RME). The result show that giving structured objects, recognizing number relation in multiplication, and maintaining flexible calculation have important roles in supporting the development of mental calculation achieving splitting level.
