TY - BOOK AU - Cabrera, Freddie R. TI - The effectiveness in the use of modules in Teaching Plane Trigonometry for freshmen students of the College of computing and information technology of the Isabela State University Cauayan Campus AV - CD-02133t PY - 2011/// CY - Cauayan City, Isabela PB - Our Lady of the Pillar College-Cauayan KW - Educational Management N1 - Educational Management ER -