Two lecturers, Jaap den Hertog and Aad Godjjin from Freudenthal Institute, Utrecht University, The Netherlands, gave lectures to IMPoME students in Sriwijaya University at September 7th to 9th, 2009. They taught about Didactic (Teaching-Learning Trajectory) and Geometry. The students studied from 08.00 am to 17.00 pm. It was like students in the Netherland because some students will study there next year about realistic mathematics education. This class was not only for studying mathematics but also to select some candidates who will get experiences in Frudental Institute.

In the first day, Jaap taught students about Fractions, Percentages, Decimals and Proportions (A Learning-Teaching Trajectory for Grade 4,5 and 6). The Students followed course very enthusiastically in spite of fasting month. They did an interesting discussion and also student activities in a group. In the second day, They studied about Understanding the concepts of proportion and ratio constructed by two grade six students (Parmjith Singh). IMPoME students were asked to analyze two student answers in grade six. How Students could solve proportion problems by using their thinking. In the third day, Jaap taught about Proportional reasoning among 7th grades students with different curricular experiences.

In geometry part, Aad taught students about vision line which is a new lesson for them. In the first day, Aad asked students to analyze two photos in different view. It was an interesting lesson because students could look something in different vision. In the second day, They studied about building with cubic bloks which looked in different view as side- and top-view. Students had to find the original building. In the last day, students studied about Perspective drawing: central projection from space to plane. They also did activity outdoor, and it was first activity done in Sriwijaya University. All students were very enjoyable and satisfied to study with Jaad and Aad. They hoped that they could meet them in Utrecht University in the Netherland. See U later.

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