Regular papers

1. Wei LAI and Weng Kin HO
   Graphing a Quadrilateral Using a Single Cartesian Equation
2. Angela THOMPSON and Alexander RADOSAVLJEVIC
   An Alternative Model of Online Mathematics Instruction to Promote Student Support
3. Yosuke SATO and Ryoya FUKASAKU
   On Possible Use of Quantifier Elimination Software in Upper Secondary Mathematics Education
4. Leslie CHANDRAKANTHA
   Understanding Sampling Distributions Using Simulation in R
5. Haruka MISHIMA and Hiroshi KAI
   Padé Approximant Using ISCZ Method
6. Alasdair MCANDREW
   Lindenmayer Systems, Fractals, and their Mathematics
7. Kasiyah JUNUS, Harry Budi SANTOSO, Heru SUHARTANTO, Sri Hartati R-SURADIJONO, and Lia SADITA
   Collaborative Summarizing Feature: Supporting Group Knowledge Construction in an Online Discussion Forum
8. Ng Wee LENG and Teo Kok MIN
   A Retrospective Study on the Effects of Flipping a Calculus Course
9. Ryoji FUKUDA and Yuki TOYOSAKA
   Vector Data Viewer for Distribution Glance
10. Ryoji FUKUDA, Naoki TAMURA, and Yuki TOYOSAKA
    Top-Down Expression Structure of Mathematical Document for Nonvisual Communication
11. Diego LIEBAN and Zsolt LAVICZA
    Geometric Modeling as Spatial Thinking Approach among Prospective Teachers
12. Fumiya IWAMA
    Constitution of the Proof using the Isabelle Theorem Prover
13. Alasdair MCANDREW
    A Framework for Evaluating Computer Algebra Systems for Mathematics Teaching and Learning
14. Andy YEH
    Mathematics, Virtual Reality, and Programming
15. Janchai YINGPRAYOON
    Study of Tones Characteristics in Thai Language using Fast Fourier Transform (FFT)
16. Kann YINGPRAYOON
    Thai License Plate Recognition Using Proportional and Filtering Method