A Cluster Randomized Study of Heuristic Teaching vs. Intelligent Tutoring for Community College Students with Disabilities in Algebra

《社区大学残疾学生代数启发式教学与智能辅导的整群随机对照研究》是一项关于两种问题解决干预策略对社区大学残疾学生在初等代数I课程成绩和STEM课程及学位课程持久度的有效性的研究。比较了嵌入内容独立元认知策略(HMTM)的启发式数学教学方法和基于计算机的个性化学生干预(ITS)方法。夏威夷大学社区学院将参与这项研究，火奴鲁鲁社区学院和迎风社区学院将作为初选对象；这两所学校目前参与了国家科学基金会资助的太平洋STEM残疾学生联盟。这项设计包括使用整群随机试验和对照组和重复措施。这项研究将由32个初等代数I班和128个SWD进行，集中在以下三个研究问题上：RQ 1.HMTM作为单一干预组件在多大程度上提高了学生a)：代数I课程完成率和b)STEM相关课程的坚持性？RQ 2.使用ITS(特别是认知导师)作为单一干预组件在多大程度上改善了学生成绩的两个方面(成功完成代数I和STEM中的持久性)？RQ 3.HMTM和ITS组合的使用在多大程度上改善学生成绩的两个领域？夏威夷大学社会工作硕士项目教授兼主席、东密歇根大学社会工作荣誉退休教授克里斯托·米尔斯博士将对该项目进行独立评估。将利用以下传播策略：1.将根据总结和形成的调查结果编写一本复制手册，详细说明项目方法和结果，并在项目网站上全面传播。稿件将在专业期刊上发表。研究方法和研究结果将在国家专业会议上公布。调查结果将发布在项目网站上，并在NSF调查人员年度会议上公布。

"A Cluster Randomized Study of Heuristic Teaching vs. Intelligent Tutoring for Community College Students with Disabilities in Algebra" is an investigation of the effectiveness of two intervention strategies for problem solving on the performance of community college students with disabilities in an Elementary Algebra I course and persistence in STEM coursework and degree programs. A heuristic math teaching method with an embedded content independent metacognitive strategy (HMTM) and a computer based individualized student intervention (ITS) will be compared. The University of Hawai`i Community Colleges will participate in the research study with Honolulu Community College and Windward Community College targeted for initial selection; these two schools currently participate in the NSF-funded Pacific Alliance for Students with Disabilities in STEM. The design involves using a cluster-randomized trial with a control group and repeated measures. The study will be conducted with 32 Elementary Algebra I classes and 128 SWD, focusing on the following three research questions:RQ 1. To what extent does HMTM, as a single intervention component, improve student a): Algebra I course completion rate and b) persistence in the STEM related course work?RQ 2. To what extent does use of ITS (specifically Cognitive Tutor), as a single intervention component,improve the two areas of student outcomes (successful completion of Algebra I and persistence in STEM)?RQ 3. To what extent do the use of HMTM and ITS in combination, improve the two areas of student outcomes?An independent evaluation of the project will be conducted by Dr. Crystal Mills, who is Professor and Chair of the University of Hawai`i's Master of Social Work program and an Emeritus Professor of Social Work at Eastern Michigan University.The following dissemination strategies will be utilized:1. A replication manual detailing project methods and results, based on the summative and formative findings, will be prepared and comprehensively disseminated on the project website.2. Manuscripts will be published in professional journals.3. The methodology and findings will be presented at national professional conferences.4. Findings will be posted on the project website and presented at the Annual Meeting of the NSF investigators.