Muse, J. Milton2022-03-162022-03-1619667703687https://hdl.handle.net/10657/8930It was the purpose of this study to: (1) identify the new topics in the eleventh and twelfth grade college preparatory mathematics programs; (2) develop a manual for one of these topics, matrix algebra, for in-service education of mathematics teachers; and (3) investigate experimentally the use of the manual in matrix algebra with high school students and with in-service mathematics teachers.application/pdfenThis item is protected by copyright but is made available here under a claim of fair use (17 U.S.C. §107) for non-profit research and educational purposes. Users of this work assume the responsibility for determining copyright status prior to reusing, publishing, or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires express permission of the copyright holder.Mathematics teachers--Training of--Texas--BeaumontMatrices--Study and teaching (Secondary)Thesisreformatted digital