Bacud, Marivic C. A demonstration instructional plan in mathematics I/ Marivic C. Bacud. - Philippines: In the Grade School, Inc., c2010-2011. - v59 n4, page 163; 28 cm. ISSN: 2094-8042 Subjects--Topical Terms: Programmed instruction--Mathematics. Dewey Class. No.: DPer 370.105 M72 June 2010-Mar 2011 v. 59 n. 1-10