Increasing underrepresented minority youth (URMY) engagement in STEM education remains at the forefront of our Nation's educational battle. The aim of this study was to create, implement, and evaluate the impact of innovative food science and technology (FST) lesson plans on URMY engagement in, and attitudes towards science, and their awareness of the field of FST. The 2011 United States census recalls that URMY make up only 13.3% of the STEM workforce. This study identifies URMY as individuals representing one or more of the following demographics: Low income, African American, Latino(a) American, and Indian American. Eight 5th-6th grade youth participated in a seven-week program, The Enliven Program (TEP), which is a STEM education program created for the purpose of this. The Enliven Program focuses on youth engagement in science learning through the implementation of a FST curriculum. The lessons delivered in TEP utilized the Biological Sciences Curriculum Study (BSCS) 5E instructional model as its foundation. This model focuses on five phases of student centered learning: engagement, exploration, explanation, elaboration, and evaluation. Data was collected using a fixed-mixed methods design. A qual-quan approach was employed to measure youths' positive behavioral and cognitive engagement in science learning. Measures of positive behavioral and cognitive engagement demonstrated that youth were positively behaviorally and cognitively engaged in the science learning activities. Furthermore, relationship building played an instrumental role in maintaining youth participants' positive attitudes towards and engagement in TEP activities. The results display an overall increase in youth's desire to do science and self-concept in science. / Master of Science in Life Sciences

With the recent release of the Next Generation Science Standards (NGSS) (NGSS Lead States, 2014b) science educators were expected to teach engineering content and practices within their curricula. However, technology and engineering (T&E) educators have been expected to teach content and practices from engineering and other disciplines since the release of the Standards for Technological Literacy (ITEA/ITEEA, 2000/2002/2007). Requisite to the preparation of globally competitive STEM literate individuals is the intentional, concurrent teaching of science, technology, and engineering concepts. Many studies have examined the pedagogical content knowledge (PCK) (Shulman, 1987) of science and T&E educators, but none have examined the science PCK of T&E educators. The purpose of this study was to examine the extent of the relationship between T&E educator’s science and T&E preparation experiences, and their teaching of science content and practices. This study, which employed a fully integrated mixed methods design (Teddlie & Tashakkori, 2006), was conducted to inform the pre- and in-service preparation needs for T&E educators. A random sample of 55 Foundations of Technology (FoT) teachers across 12 school systems within one state participated in an online survey, leading to eight teachers being purposefully selected for classroom observations. Data collected from the surveys and classroom observations were analyzed through Spearman’s rho tests to examine relationships between preparation factors and teaching of science content and practices. These data were corroborated with curriculum content analyses, classroom observations, and interview responses to validate the results. Analyses of the data across all three methods revealed significant correlations between many preparation factors and the teaching of science content and practices. Specifically the amount of high school and undergraduate physics courses, and T&E and science in-service delivered were found to have statistically significant, strong positive correlations. These findings suggest T&E educators with increased amounts of these preparation experiences can be expected to teach science content and practices more proficiently. The findings and conclusions drawn from the data analyses provide implications for science and T&E educators, researchers, preservice programs, and in-service professional development efforts. The discussion and implications suggest the need to conduct replication studies in different contexts. / Ph. D.

In response to STEM (science, technology, engineering, mathematics) educational reform, pedagogical approaches such as technological/engineering design-based learning (T/E DBL) have received increased emphasis as a means to enrich student learning and develop their higher-order cognitive competencies. Despite students exposure to the T and E of STEM as a means to make connections and improve learning (NAE and NRC, 2009), there still exists minimal evidence such experiences have a positive impact on their cognition and achievement (Honey, Pearson, and Schweingruber, 2014). Additionally, although research has well illustrated the design cognition of professional designers, and even students at the collegiate level, few investigations of high school students' cognitive activity during designing has been undertaken (Crismond and Adams, 2012; Hynes, 2012; Lammi and Becker, 2013). Furthermore, as researchers have begun to address this gap, broad coding schemes have been employed, describing students' cognitive efforts in terms of comprehensive categories such as formulation, analysis, and synthesis. However, as previous research has demonstrated nuances among existing categories (Purcell, Gero, Edwards, and McNeill, 1996), what has yet to be done is describe K-12 students' cognitive behaviors in terms of these underlying mechanisms. The purpose of this study was to characterize students' cognitive processes during engineering design at a more distinct level, which can increase understanding and begin to address the minimal attempts to 'connect research findings on how people design with what teachers need to understand and do to help K-16 students improve their design capability and learn through design activities" (Crismond and Adams, 2012, p. 738). The methodology of this study was informed by procedures of cognitive science and verbal protocol analysis. The primary form of data analyzed was audio and video recordings of the design task. The recorded data, in transcript form, was coded using the Purcell, Gero, Edwards, and McNeill (1996) framework. These coded data were then analyzed using descriptive and inferential statistics. Findings from this study revealed that significant differences existed between high school seniors who took pre-engineering courses, and those who did not when engaged in Consulting Information about the Problem (Cp) and in considering System issues, which examined the problem from the point of view of the user. Additionally, Proposing a Solution (Ps), Postponing a Design Action (Pd), and Looking Back (Lb) approached a value of statistical significance in differences between the groups of participants. Findings also characterized how students exert the most and least amount of their cognitive effort in relation to the Problem Domain: Degree of Abstraction and Strategy Classification coding schemes. / Ph. D.

This study identified key instructional practices for science, technology, engineering, and mathematics (STEM) lessons for students with disabilities (SWD) based on the perceptions of teachers. Barriers to STEM lessons for SWD were identified, as well as the professional development desired by teachers. SWD can benefit from participation in STEM lessons. STEM is an acronym that is often defined as an interdisciplinary approach to learning by incorporating at least two of the disciplines with real-world applications through problem-solving projects. STEM lessons can offer opportunities for K–12 students to engage in 21st-century skills and the 5 C's (citizenship, collaboration, communication, creativity, and critical thinking), which are skills that are desired for college and career readiness and for competition in a global economy. This basic qualitative study consisted of 13 interviews (5 elementary, 4 middle, and 4 high school) with teachers from 12 schools. Results were analyzed using deductive coding to identify instructional practices, barriers, and recommended professional development. Findings suggest that knowledge of the SWD, building relationships, use of support staff and others, intentional grouping, assigned group roles, hands-on learning, and classroom modifications helped SWD gain access to STEM lessons. In addition, student ability level, lack of adult support, and time limitations were identified as barriers for SWD's participation in STEM lessons. Finally, teachers believe that professional development is needed in teacher collaboration and student disability knowledge. Teachers want the opportunity to work together during STEM lesson development and also during implementation of STEM lessons. Teachers also want to learn more about specific strategies for each disability category. The information gained should support teachers and school leaders with inclusivity of SWD in STEM lessons. / Doctor of Philosophy / Implementation of key instructional practices for STEM lessons can improve inclusivity for SWD. Knowledge of barriers and desired professional development can also increase inclusiveness. STEM is an acronym that is often defined as an interdisciplinary approach to learning that incorporates at least two of the disciplines with real-world applications through problem-solving projects. STEM lessons can offer opportunities for K–12 students to engage in 21st-century skills and the 5 C's (citizenship, collaboration, communication, creativity, and critical thinking), which are skills that are desired for college and career readiness and for competition in a global economy. Through a basic qualitative study involving 13 teachers (5 elementary, 4 middle, and 4 high school) from 12 schools, information about SWD's participation in STEM lessons was gained. Findings suggest that knowledge of the SWD, building relationships, use of support staff and others, intentional grouping, assigned group roles, hands-on learning, and classroom modifications helped SWD gain access to STEM lessons. In addition, student ability level, lack of adult support, and time limitations were identified as barriers for SWD's participation in STEM lessons. Finally, the results revealed that teachers believe that more professional development is needed in teacher collaboration and student disability knowledge. Teachers want the opportunity to work together during STEM lesson development and also during implementation of STEM lessons. Teachers also want to learn more about specific strategies for each disability category.

STEM (Science, Technology, Engineering and Mathematics) education for youth can lead to the development of skills to design technologies, innovate tools, optimize work processes, and solve problems to improve society. The public high schools in Senegal are reported to have a low enrollment of students in STEM-related subjects. Youth are taught to memorize theories, with limited opportunities for hands-on STEM activities. However, there are other opportunities for Senegalese youth to engage in STEM education outside the formal school system. This research used case studies to explore the experiences of Senegalese youth learners and educators engaged in hands-on STEM education within non-formal learning settings in Dakar, Senegal. The first case involved six youth and six educators from wood carpentry and metal joinery apprenticeships. The second case involved seven youth and five educators from Go4STEAM, an all-girls out-of-school STEM program. The Ecological Systems Theory was used as a theoretical framework to situate the youth and educators in their learning context and consider ways in which their self and environment influences their STEM learning and teaching experience. An asset-based analytical approach was used in both cases to identify and describe positive influences and educational practices related to learning STEM. Results of the study indicated that educators in the apprenticeship setting display elements of cultural-based education as they not only teach the youth learners engineering through guided instructions, but also help raise them into adulthood. The youth learners in this setting have dropped out of school, thus recommendations for this learning setting include leveraging apps, mobile training, and competitions to promote engineering education as well as ensuring a strong foundation in reading, writing, and math. The Go4STEAM learning setting was found to offer activities that were interesting and responsive for their youth learners, and their learning environment emphasized peer collaboration. Recommendations for this learning setting include encouraging youth to take leadership of their learning whilst positioning the educators as co-learners, and offering the youth opportunities to engage in STEM with various partners and settings around the community. By recognizing and valuing the strengths of non-formal learning settings, this study identifies opportunities to strengthen the Senegalese STEM Learning Ecosystem. The additional support can lead to opportunities for Senegalese youth to become innovators and problem solvers that use their skills for educational and career advancement, upward economic mobility, and improved community development. / Doctor of Philosophy / STEM (Science, Technology, Engineering and Mathematics) Education can be beneficial for the youth because it gives them useful skills for their jobs and their community. There are many factors that influence how youth learn STEM, and youth are able to learn in school and out of school. In Senegal, there are a low number of students enrolled in STEM-related subjects in high school, and the schools do not offer hands-on STEM activities. This research uses case studies to investigate STEM education for youth in non-formal, out-of-school settings, in Dakar, Senegal. Six youth and six educators from the wood carpentry and metal joinery apprenticeships, and seven youth and five educators from the Go4STEAM all-girls program, participated in this study. For each case, the Ecological Systems Theory was used to help consider the various influences that may directly or indirectly impact the youth's STEM education. An asset-based approach was used to identify positive influences and educational practices from the two cases. The study determined that the educators in apprenticeships use cultural norms and values to teach the youth learners engineering and raise them to become adults. The learners do not go to school so they can potentially benefit from apps, mobile training, and competitions that facilitate learning engineering, and the basics of reading, writing and math. At Go4STEM, the study determined that the learning environment was fun for the youth and encourages teamwork. The learners at Go4STEAM may benefit from deciding what STEM topics they want explore and the educators support as co-learners. Also, the educators can help facilitate STEM activities that engage community resources. This study identifies the strengths of non-formal, out-of-school-learning, and identifies opportunities to improve the Senegalese STEM Learning Ecosystem. With the additional support, Senegalese youth can become innovators and problem solvers that use their skills to benefit themselves, their families, and their communities.

Computer Science (CS) is among the fastest-growing fields. To fill the abundance of positions in Computer Science, early learning experiences should be implemented to promote interest in the field. This research aims to observe the impact of a design-based computer science treatment on 5th-grade students' interest in computer science careers. The treatment consisted of nine one-hour lessons in which the researcher introduced computer science content to students. At the end of the treatment, participants developed an application to study for a state-wide science assessment. To measure a change in students' career interests following the treatment, an adapted version of the STEM Career Interest Survey (STEM-CIS), grounded by Social Cognitive Career Theory (SCCT), was implemented using a pre-survey-post-survey design. Qualitative data was collected using focus groups to explain quantitative findings further. The samples' post-survey (39.62) mean was greater than the pre-survey mean (37.17), but the paired t-test was just above the statical significance level of 0.05, t(28)= -2.04, p =.051. There was a statistically significant increase for the survey items that align with the SCCT aspects Interest (t(30)= -2.30, p =.028) and Contextual Support (t(30)= -2.25, p =.032). The researcher identified several themes related to a positive perception toward the treatment and computer science and general during qualitative data analysis. These findings indicate a design-based computer science treatment can increase 5th-grade students' interest in computer science careers. / Doctor of Philosophy / Learning experiences influence an individual's career development. This dissertation observes the impact of a design-based computer science project in a 5th-grade classroom. The researcher implemented a pre-survey-post-survey design to measure change following the treatment. The researcher calculated the difference between survey means and ran a matched paired t-test to determine the statistical significance. The results of the paired t-test were not statistically significant. Still, the survey items that aligned with interest and contextual support had a statistically significant increase following the treatment. Additionally, the researcher conducted focus groups to collect qualitative data to explain quantitative findings further. Content analysis of the qualitative data revealed participants had a positive perception of the treatment and computer science in general. These results imply that a design-based computer science treatment can increase 5th-grade students' interest in computer science careers.

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In science, technology, engineering, and mathematics (STEM) education, problem solving tends to be highly procedural, and these procedures are typically taught with general instructional text and specific worked examples. Instructional text broadly defines procedures for problem solving, and worked examples demonstrate how to apply procedures to problems. Subgoal labels have been used to help students understand the structure of worked examples, and this feature has increased problem solving performance. The present study explored using subgoal labels in instructional text to further improve learners’ problem solving performance. A factorial design examined the efficacy of subgoal labeled instructional text and worked examples for programming education. The results of the present study suggest that subgoal labels in instructional text can help learners in a different way than subgoal labels in worked examples. Subgoal labels in text helped the learner articulate the general procedure better, and subgoal labels in the example helped the learner apply those procedures better. When solving novel problems, learners who received subgoal labels in both the text and example performed better than those who received subgoal labels in only the example. Learners who received subgoal labels in only the example performed better than those who received subgoal labels in only the text and those who did not receive subgoal labels at all. The present study indicates that subgoal labeled instructional text can improve novices’ problem solving performance in programming, but subgoal labels must appear in both the text and example.

abstract: From the instructional perspective, the scope of "active learning" in the literature is very broad and includes all sorts of classroom activities that engage students with the learning experience. However, classifying all classroom activities as a mode of "active learning" simply ignores the unique cognitive processes associated with the type of activity. The lack of an extensive framework and taxonomy regarding the relative effectiveness of these "active" activities makes it difficult to compare and contrast the value of conditions in different studies in terms of student learning. Recently, Chi (2009) proposed a framework of differentiated overt learning activities (DOLA) as active, constructive, and interactive based on their underlying cognitive principles and their effectiveness on students' learning outcomes. The motivating question behind this framework is whether some types of engagement affect learning outcomes more than the others. This work evaluated the effectiveness and applicability of the DOLA framework to learning activities for STEM classes. After classification of overt learning activities as being active, constructive or interactive, I then tested the ICAP hypothesis, which states that student learning is more effective in interactive activities than constructive activities, which are more effective than active activities, which are more effective than passive activities. I conducted two studies (Study 1 and Study 2) to determine how and to what degree differentiated activities affected students' learning outcomes. For both studies, I measured students' knowledge of materials science and engineering concepts. Results for Study 1 showed that students scored higher on all post-class quiz questions after participating in interactive and constructive activities than after the active activities. However, student scores on more difficult, inference questions suggested that interactive activities provided significantly deeper learning than either constructive or active activities. Results for Study 2 showed that students' learning, in terms of gain scores, increased systematically from passive to active to constructive to interactive, as predicted by ICAP. All the increases, from condition to condition, were significant. Verbal analysis of the students' dialogue in interactive condition indicated a strong correlation between the co-construction of knowledge and learning gains. When the statements and responses of each student build upon those of the other, both students benefit from the collaboration. Also, the linear combination of discourse moves was significantly related to the adjusted gain scores with a very high correlation coefficient. Specifically, the elaborate type discourse moves were positively correlated with learning outcomes; whereas the accept type moves were negatively correlated with learning outcomes. Analyses of authentic activities in a STEM classroom showed that they fit within the taxonomy of the DOLA framework. The results of the two studies provided evidence to support the predictions of the ICAP hypothesis. / Dissertation/Thesis / Ph.D. Curriculum and Instruction 2012

In science, technology, engineering, and mathematics (STEM) education, producing high level talent and increasing equity of access and engagement are prominent but sometimes conflicting policy directives. Yet, retention and persistence are important outcomes both for the production of elite talent and for promoting equity within STEM fields. This dissertation investigates the effects of policy on student persistence in Finland, Sweden and the United States. Drawing on interviews with upper-secondary school students and teachers (Finland: 26 students, 8 teachers; Sweden: 29 students and 10 teachers; United States: 19 students, 2 mentors) and surveys (Finland: 255 students, Sweden: 130 students, United States: 288 students), this study investigates the effects that different structures (including contrasting policies of stratification and differentiation, specialist magnet schools and enrichment programmes) have on students’ intentions to persist in STEM fields. This study supports the theory that educational policies mediate student persistence both through structural possibility, and through the development of students’ identities and non-cognitive skills. Here, non-cognitive skills (such as self-efficacy and self-concept) are considered part of an ‘adaptive habitus’ and a latent variable comprised of domain-specific non-cognitive skills is used in models of student persistence. The models illustrate the do- main specific interactions of educational structures, student background, adaptive habitus and student persistence. Analysis of the interviews further explores these relationships, suggesting the importance of programmes that include exposure to challenging real-world STEM learning and interaction with STEM professionals, and that such features are effective in part because they foster an adaptive habitus towards STEM fields. The policy implications for both efficiency and equity are considered. A framework of Mechanism, Transparency and Permeability is introduced for analysing the effects of policies on efficiency and equity. Drawing on the interviews, this framework is used to give a comparative characterisation of the educational systems Finland, Sweden and the United States. Permeability is highlighted as particularly important for retention and persistence, and a key consideration for educational policies that seek to produce elite talent, and promote equity in STEM fields.