The Case for Improving U.S. Computer Science Education

Despite the growing use of computers and software in every facet of our economy, not until recently has computer science education begun to gain traction in American school systems. The current focus on improving science, technology, engineering, and mathematics (STEM) education in the U.S. school system has disregarded differences within STEM fields. Indeed, the most important STEM field for a modern economy is not only one that is not represented by its own initial in "STEM" but also the field with the fewest number of high school students taking its classes and by far has the most room for improvement—computer science

Computational thinking: an investigation of the existing scholarship and research

2013 Spring.Includes bibliographical references.Despite the prevalence of computing and technology in our everyday lives and in almost every discipline and profession, student interest and enrollment in computer science courses is declining. In response, computer science education in K-12 schools and universities is undergoing a transformation. Computational thinking has been proposed as a universal way of thinking with benefits for everyone, not just computer scientists. The focus on computational thinking moves beyond computer literacy, or the familiarity with software, to a way of thinking that benefits everyone. Many see computational thinking as a way to introduce students to computer science concepts and ways of thinking and to motivate student interest in computer science. The first part of this dissertation describes a study in which the researcher systematically examined the literature and scholarship on computational thinking since 2006. The aim was to explore nature and extent of the entire body of literature and to examine the theory and research evidence on computational thinking. Findings reveal that there has been a steady increase in the popularity of the concept of computational thinking, but it is not yet developed to the point where it can be studied in a meaningful way. An examination of the research evidence on computational thinking found inadequacies in the conceptual characteristics and the reporting of studies. Weaknesses were identified in the theoretical conceptualization of interventions, definitions of key concepts, intervention descriptions, research designs, and the presentation of findings. Recommendations for bolstering the research evidence around this burgeoning concept are presented, including collaboration between computer scientists and educational researchers to apply social science research methods to conduct robust studies of computational thinking interventions. The second part of this dissertation describes how computational thinking is currently incorporated into K-12 educational settings. The bulk of the literature on computational thinking describes ways in which programs promote this way of thinking in students. The K-12 programs that encourage computational thinking are classified, described, and discussed in a way that is intended to be meaningful for K-12 educators and educational researchers. Potential barriers and factors that might enable educators to use each category of interventions are discussed

Restart: The Resurgence of Computer Science in UK Schools

Computer science in UK schools is undergoing a remarkable transformation. While the changes are not consistent across each of the four devolved nations of the UK (England, Scotland, Wales and Northern Ireland), there are developments in each that are moving the subject to become mandatory for all pupils from age 5 onwards. In this article, we detail how computer science declined in the UK, and the developments that led to its revitalisation: a mixture of industry and interest group lobbying, with a particular focus on the value of the subject to all school pupils, not just those who would study it at degree level. This rapid growth in the subject is not without issues, however: there remain significant forthcoming challenges with its delivery, especially surrounding the issue of training sufficient numbers of teachers. We describe a national network of teaching excellence which is being set up to combat this problem, and look at the other challenges that lie ahead

The Effectiveness of Codesters in Teaching Basic Computer Science Topics

Founded in 2014, Codesters is a visual programming environment (VPE) like the popular Scratch and Alice. Its goal is to teach middle school and older student’s computer programming. Unlike its predecessors, users of Codesters drag and drop actual Python code instead of blocks and can edit the code themselves. Codesters has also developed modules that integrate coding lessons into the VPE. In this study, we consider the Codesters Python 1 module and investigate its effectiveness in teaching the basic coding concepts of variables, loops and conditionals. During Fall 2018 and Spring 2019, we ran a coding class for eighth graders at a local Milwaukee school based on this module. We gave a pre-test, three quizzes and a post-test to evaluate what the students have learned. We then analyzed the results of these evaluations and compared them to those taken by students who learned programming in a traditional CS1 class. Our results indicate that users of Codesters understood loops and conditionals as well as the students from the traditional CS1 class. We also found that the pre-test was a poor indicator of students’ performance in the coding class suggesting that Codesters is able to engage students who might not necessarily excel in a traditional classroom

INVESTIGATING FACTORS PREDICTING EFFECTIVE LEARNING IN A CS PROFESSIONAL DEVELOPMENT PROGRAM FOR K-12 TEACHERS

The demand for K-12 Computer Science (CS) education is growing and there is not an adequate number of educators to match the demand. Comprehensive research was carried out to investigate and understand the influence of a summer two-week professional development (PD) program on teachers’ CS content and pedagogical knowledge, their confidence in such knowledge, their interest in and perceived value of CS, and the factors influencing such impacts. Two courses designed to train K-12 teachers to teach CS, focusing on both concepts and pedagogy skills were taught over two separate summers to two separate cohorts of teachers. Statistical and SWOT analyses were then performed using measures such as attitudinal surveys and knowledge assessments. Findings showed the PD program had a significant impact on the teachers, there was a positive correlation between teachers’ pre-program confidence and knowledge, and additional insights on how to deliver such PD programs more effectively. Results will help inform K-12 CS PD program design. Advisor: Leen-Kiat So

Computational Thinking and Its Mathematics Origins through Purposeful Music Mixing with African American High School Students

Computational thinking (CT) is being advocated as core knowledge needed by all students—particularly, students from underrepresented groups—to prepare for the 21st century (Georgia Department of Education, 2017; Smith, 2016, 2017; The White House, 2017; Wing, 2006, 2014). The K–12 Computer Science Frameworks (2016), written by a national steering committee, defines CT as “the thought processes involved in expressing solutions as computational steps or algorithms that can be carried out by a computer” (p. 68). This project investigated current national introductory CT curricula and their related programming platforms used in high schools. In particular, the study documents the development, implementation, and quantitative outcomes of a purposeful introductory CT curriculum framed by an eclectic theoretical perspective (Stinson, 2009) that included culturally relevant pedagogy and critical play through a computational music remixing platform known as EarSketch. This purposeful introductory CT curriculum, designed toward engaging African American high school students, was implemented with a racially diverse set of high school students to quantitatively measure their engagement and CT content knowledge change. The goal of the project was to increase engagement and CT content knowledge of all student participants, acknowledging that what benefits African American students tends to benefit all students (Hilliard, 1992; Ladson-Billings, 2014). An analysis of the findings suggests that there was a significant increase in student cognitive engagement for racially diverse participants though not for the subset of African American students. Affective and conative engagement did not significantly change for racially diverse participants nor for the African American student subset. However, both the racially diverse set of students’ and their subset of African American students’ CT content knowledge significantly increased. As well, there was no significant difference between African American students and non-African American students post-survey engagement and CT content knowledge post-assessment means when adjusted for their pre-survey engagement and pre-assessment knowledge respectively. Hence, showing that purposeful music mixing using EarSketch designed toward African American students benefitted a racially diverse set of students in cognitive engagement and CT content knowledge and the African American subset of students in CT content knowledge. Implications and recommendations for further study are discussed

An Examination of Abstraction in K-12 Computer Science Education

Computer scientists have been working towards a common definition of abstraction; however, the instruction and assessment of abstraction remain categorically underresearched. Because abstraction is often cited as a component of computational thinking, abstraction has been summarily likened to a higher order thinking skill. A broad conceptual framework including philosophy, psychology, constructionism, and computational thinking was aligned with the descriptive qualitative design and guided the literature review and data analysis. This qualitative examination of how teachers determine curriculum, deliver instruction, and design assessments in K-12 computer science education provides insight into best practices and variables for future quantitative study. The instructional strategies, objectives, and assessments of twelve K-12 computer science teachers from 3 states were examined in this descriptive qualitative examination of instruction using thematic coding analysis. The majority of teachers had little to no professional development regarding teaching abstraction. All teachers in the study were unsure what student abstraction abilities should be according to grade level. Teachers\u27 understanding of abstraction ranged from very little knowledge to very knowledgeable. The majority of teachers did not actively assess abstraction. Teachers described successfully teaching abstraction through multiple instructional practices and spiraling curriculum. Practical descriptive insights illuminate additional variables to research the instruction of abstraction qualitatively and quantitatively, as well as provide anecdotal instructional successes

Coding as a Literacy Practice in Adult Learning Communities

This study considered how computing courses for adult learners might be customized to effectively address their reasons for learning to read and write computer code. The view of coding as a literacy practice is the key theme in this study. Street’s (2006) ideological model of literacy along with the perspective of computational participation, are theoretical models used to explore coding as a literacy practice (Kafai & Burke, 2017). Through the vehicle of action research, this study focused on analyzing the delivery of an introductory web languages coding course for female immigrants. This study drew from both the student and teacher perspectives. The study used student feedback collected from online class survey questionnaires and semi-structured interviews. The study also incorporated the teacher’s field notes, a course summary report, and the Teaching Perspectives Inventory survey results (Collins & Pratt, 2011). Findings from this study include these areas of insights: 1) students’ views on the benefits of learning coding, 2) the language and communication challenges students faced, and 3) an overview of some effective teaching tools and approaches. Based on these findings, there is a discussion that considered possible issues related to student engagement in learning web language coding. Included are sections on implications for practice and future research