- How to Modify a Math Problem
- Brain Based Learning
- Application of Lachenbruch Procedure in Quadratic Case of Discriminant Analysis (by Dewi Rachmatin and Kania Sawitri)
- Data Clustering Using Divisive Analysis Method (Diana) (by: Chandra Gunawan, Dewi Rachmatin, and Maman Suherman)
- Comparison between Agglomerative Method, Divisif Method, and K-Means Method in Cluster Analysis (by Dewi Rachmatin and Kania Sawitri)