Development and validation of strategic intervention material for Grade IV pupils in solving  angles of triangle 
Darlene Mae C. Villaflores... [et.al] 
 - ix, 105 leaves   col. ill.  28 cm 
<br/><br/> Undergraduate Thesis (BEED) - Nueva Vizcaya State University 
<br/><br/>Includes appendices & bibliography 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Angles<br/>Strategic intervention material