Cruz, Ronnie <br/><br/>Development validation, and acceptability of modules In trigonometry of fourth year High School Students/ Cruz, Ronnie, Charlotte Deguzman, Bill Clinton Regorgo, [and] Jeffrey Bajas.  -  2013  - xii, 78 leaves,  illustrations,  28 cm <br/><br/>Undergraduate Study Thesis <br/><br/> This study aimed to develop, Validate and determine the level the acceptability of modules in Trigonometry, which will serve as supplementary instructional material in Teaching Trigonometry. This was conducted during the school year 2013-2014 at Kasiglahan village National High School <br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometrical functions.<br/>Geometry, Analytic-Plane.<br/><br/><label>LC Class. No.: </label>LG 221. R59. D1923  / 2013