Dr. Gary Ackerman, an educational technology specialist with decades of experience in K-12, community college, and faculty development has released Efficacious Technology Management: A Guide for School Leaders. This is his second book, and it is available under a Creative Commons license.

Short Description:
Being able to step voltages to a higher value and step voltages down to a lower value is one of the benefits of alternating current. This book will explain how this is possible through transformers with a focus on single phase.

Word Count: 6084

Included H5P activities: 1

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Electromagnetics Volume 1 by Steven W. Ellingson is a 225-page, peer-reviewed open educational resource intended for electrical engineering students in the third year of a bachelor of science degree program. It is intended as a primary textbook for a one-semester first course in undergraduate engineering electromagnetics. The book employs the “transmission lines first” approach in which transmission lines are introduced using a lumped-element equivalent circuit model for a differential length of transmission line, leading to one-dimensional wage equations for voltage and current.

Suggested citation: Ellingson, Steven W. (2018) Electromagnetics, Vol. 1. Blacksburg, VA: VT Publishing. https://doi.org/10.21061/electromagnetics-vol-1 CC BY-SA 4.0

Three formats of this book are available:
Print (ISBN 978-0-9979201-8-5)
PDF (ISBN 978-0-9979201-9-2)
LaTeX source files

If you are a professor reviewing, adopting, or adapting this textbook please help us understand a little more about your use by filling out this form: http://bit.ly/vtpublishing-updates

Additional Resources
Problem sets and the corresponding solution manual are also available.
Community portal for the Electromagnetics series https://www.oercommons.org/groups/electromagnetics-user-group/3455/
Faculty listserv for the Electromagnetics series https://groups.google.com/a/vt.edu/d/forum/electromagnetics-g
Submit feedback and suggestions http://bit.ly/electromagnetics-suggestion

Table of Contents:
Chapter 1: Preliminary Concepts
Chapter 2: Electric and Magnetic Fields
Chapter 3: Transmission Lines
Chapter 4: Vector Analysis
Chapter 5: Electrostatics
Chapter 6: Steady Current and Conductivity
Chapter 7: Magnetostatics
Chapter 8: Time-Varying Fields
Chapter 9: Plane Waves in Lossless Media
Appendixes
A. Constitutive Parameters of Some Common Materials
B. Mathematical Formulas
C. Physical Constants

About the Author: Steven W. Ellingson (ellingson@vt.edu) is an Associate Professor at Virginia Tech in Blacksburg, Virginia in the United States. He received PhD and MS degrees in Electrical Engineering from the Ohio State University and a BS in Electrical & Computer Engineering from Clarkson University. He was employed by the US Army, Booz-Allen & Hamilton, Raytheon, and the Ohio State University ElectroScience Laboratory before joining the faculty of Virginia Tech, where he teaches courses in electromagnetics, radio frequency systems, wireless communications, and signal processing. His research includes topics in wireless communications, radio science, and radio frequency instrumentation. Professor Ellingson serves as a consultant to industry and government and is the author of Radio Systems Engineering (Cambridge University Press, 2016).

This textbook is part of the Open Electromagnetics Project led by Steven W. Ellingson at Virginia Tech. The goal of the project is to create no-cost openly-licensed content for courses in undergraduate engineering electromagnetics. The project is motivated by two things: lowering learning material costs for students and giving faculty the freedom to adopt, modify, and improve their educational resources.

Accessibility features of this book: Screen reader friendly, navigation, and Alt-text for all images and figures.

Publication of this book was made possible in part by the Open Education Faculty Initiative Grant program at the University Libraries at Virginia Tech. http://guides.lib.vt.edu/oer/grants

Electromagnetics, volume 2 by Steven W. Ellingson is a 216-page peer-reviewed open textbook designed especially for electrical engineering students in the third year of a bachelor of science degree program. It is intended as the primary textbook for the second semester of a two-semester undergraduate engineering electromagnetics sequence. The book addresses magnetic force and the Biot-Savart law; general and lossy media; parallel plate and rectangular waveguides; parallel wire, microstrip, and coaxial transmission lines; AC current flow and skin depth; reflection and transmission at planar boundaries; fields in parallel plate, parallel wire, and microstrip transmission lines; optical fiber; and radiation and antennas.

Table of Contents:
Chapter 1: Preliminary Concepts
Chapter 2: Magnetostatics Redux
Chapter 3: Wave Propagation in General Media
Chapter 4: Current Flow in Imperfect Conductors
Chapter 5: Wave Reflection and Transmission
Chapter 6: Waveguides
Chapter 7: Transmission Lines Redux
Chapter 8: Optical Fiber
Chapter 9: Radiation
Chapter 10: Antennas
Appendix A: Constitutive Parameters of Some Common Materials
Appendix B: Mathematical Formulas
Appendix C: Physical Constants

Additional Resources
Problem sets and the corresponding solution manuals
Slides of figures used in and created for the book
LaTeX sourcefiles.
Screen-reader friendly version
Errata for Volume 2
Collaborator portal for the Electromagnetics series https://www.oercommons.org/groups/electromagnetics-user-group/3455
Faculty listserv for the Electromagnetics series
Submit feedback and suggestions

The Open Electromagnetics Project https://www.faculty.ece.vt.edu/swe/oem
Led by Steven W. Ellingson at Virginia Tech, the goal of the Open Electromagnetics Project is to create no-cost openly-licensed content for courses in engineering electromagnetics. The project is motivated by two things: lowering learning material costs for students and giving faculty the freedom to adopt, modify, and improve their educational resources.

Books in this Series
Electromagnetics, Volume 1 https://doi.org/10.21061/electromagnetics-vol-1
Electromagnetics, Volume 2 https://doi.org/10.21061/electromagnetics-vol-2

To express your interest in a book or this series, please visit http://bit.ly/vtpublishing-updates

Short Description:
This book is written both for practitioners and business students. Managers wishing to understand how electronic commerce is revolutionizing business will find that our comprehensive coverage of essential business issues (e.g., pricing and distribution) answers many of their questions.

Long Description:
This book is written both for practitioners and business students. Managers wishing to understand how electronic commerce is revolutionizing business will find that our comprehensive coverage of essential business issues (e.g., pricing and distribution) answers many of their questions. Advanced business students (junior, seniors, and graduate students) will find that the blend of academic structure and practical examples provides an engaging formula for learning.

The book’s title reflects some key themes that we develop. First, we are primarily concerned with electronic commerce, which we define as using technology (e.g., the Internet) to communicate or transact with stakeholders (e.g., customers). Second, we discuss how organizations must change in order to take advantage of electronic commerce opportunities. In this sense, our book offers the strategic perspective (i.e., the best way to operate a successful business in the 21st century). Third, with the growing importance of the Internet and related technologies, organizations must take electronic commerce into account when they are creating strategic plans. Thus, electronic commerce is a strategic perspective that all firms must adopt, both in the present and in the future. In other words, an organization that does not explicitly consider electronic commerce as a strategic imperative is probably making a crucial error. Here, we focus primarily on the opportunities and tactics that can lead to success in the electronic marketplace.

Word Count: 50224

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This book contains eight chapters. Chapter Two briefly describes the technology that makes electronic commerce possible, while Chapter Three introduces the topic of Web strategy. The major functions of marketing are described in the next five chapters: Promotion (Chapter Four); Promotion and Purchase (Chapter Five); Distribution (Chapter Six); Service (Chapter Seven); and Pricing (Chapter Eight). The final chapter takes a broader, societal perspective and discusses the influence of electronic commerce on society.

This book is not intended for budding mathematicians. It was created for a math program in which most of the students in upper-level math classes are planning to become secondary school teachers. For such students, conventional abstract algebra texts are practically incomprehensible, both in style and in content. Faced with this situation, we decided to create a book that our students could actually read for themselves. In this way we have been able to dedicate class time to problem-solving and personal interaction rather than rehashing the same material in lecture format.

It is essential to lay a solid foundation in mathematics if a student is to be competitive in today's global market. The importance of algebra, in particular, cannot be overstated, as it is the basis of all mathematical modeling used in applications found in all disciplines. Traditionally, the study of algebra is separated into a two parts, elementary algebra and intermediate algebra. This textbook, Elementary Algebra, is the first part, written in a clear and concise manner, making no assumption of prior algebra experience. It carefully guides students from the basics to the more advanced techniques required to be successful in the next course.

Elementary Algebra is designed to meet the scope and sequence requirements of a one-semester elementary algebra course. The book’s organization makes it easy to adapt to a variety of course syllabi. The text expands on the fundamental concepts of algebra while addressing the needs of students with diverse backgrounds and learning styles. Each topic builds upon previously developed material to demonstrate the cohesiveness and structure of mathematics.

Short Description:
This is an open textbook on Beginner Arabic for undergraduate students who are taking Arabic in their first semester. It addresses letters and sounds of Arabic along with basic skills in reading, speaking and writing. The book can be used as a self-study resource or as the main textbook in beginning Arabic classes.

Long Description:
This open textbook is intended for beginning students of Arabic in their first semester. This OER is unique in its presentation of Arabic language content through theme-based modules. Each theme is addressed through vocabulary, grammar, reading, speaking, and writing components. Each chapter includes self-check embedded quizzes that help learners digest language concepts. The book is also designed with teachers in mind. Each chapter includes pair work and group tasks that the teacher can implement in class and other parts that can be assigned as homework. The focus of the book is to build literacy in Standard Arabic structure in a simplified and sequenced approach while emphasizing speaking skills. By the end of this course, students will be well prepared for building their competence in a sequenced and organized manner in the following parts of this series.

Word Count: 6312

ISBN: 978-1-62610-108-1

(Note: This resource's metadata has been created automatically by reformatting and/or combining the information that the author initially provided as part of a bulk import process.)

Short Description:
This is an open textbook on Elementary Arabic for undergraduate students who are taking Arabic in their second semester. It addresses language structures in theme-based modules that cover the four language skills. The book can be used as a self-study resource or as the main textbook in beginning Arabic classes.

Long Description:
This open textbook is intended for beginning students of Arabic who have already covered their literacy skills and ready to explore language in a lively and interactive approach. This OER is unique in its presentation of Arabic language content through theme-based modules. Each theme is addressed through vocabulary, grammar, reading, speaking, culture, and writing components. Each chapter includes self-check embedded quizzes that help learners digest language concepts. The book is also designed with teachers in mind. Each chapter includes pair work and group tasks that the teacher can implement in class and other parts that can be assigned as homework. The focus of the book is to establish a sound basis in Standard Arabic structure in a simplified and sequenced approach. Additionally, each theme will include a conversation section in which a module on Egyptian Arabic is presented. While developing a solid foundation in written Arabic, the Egyptian Arabic component will enhance students’ spoken fluency and enrich their cultural experience in their language learning journey.

Word Count: 14498

ISBN: 978-1-62610-108-1

(Note: This resource's metadata has been created automatically by reformatting and/or combining the information that the author initially provided as part of a bulk import process.)

This textbook covers calculus of a single variable, suitable for a year-long (or two-semester) course. Chapters 1-5 cover Calculus I, while Chapters 6-9 cover Calculus II. The book is designed for students who have completed courses in high-school algebra, geometry, and trigonometry. Though designed for college students, it could also be used in high schools. The traditional topics are covered, but the old idea of an infinitesimal is resurrected, owing to its usefulness (especially in the sciences).

Short Description:
This open textbook is designed for those who are learning Chinese as a second/foreign language in their first semester. It has eight chapters, covering topics including a brief introduction about the Chinese language, greetings, and self-introduction, hobbies, nationalities, family members and occupations, inviting friends to dinner, talking about food and beverage, making phone calls, and talking about classes and exams.

Long Description:
This open textbook is designed for beginners learning Chinese as a second/foreign language. This book aims to introduce learners to standard Chinese pronunciation, character knowledge, basic conversational phrases, grammar and vocabulary use, and cultural knowledge. Throughout the eight chapters, learners will explore: greetings and self-introduction, hobbies, nationalities, family members and occupations, inviting friends to dinner, talking about food and beverage, making phone calls, and talking about classes and exams. Learning activities include audio recordings so students can listen to the pronunciation of vocabulary words and observe dialogue between speakers. The book also includes videos with captions, allowing learners to listen, watch, and read. Original interactive activities have been created by the author to facilitate the practice of target vocabulary and dialogues.

Word Count: 19508

ISBN: 978-1-62610-115-9

(Note: This resource's metadata has been created automatically by reformatting and/or combining the information that the author initially provided as part of a bulk import process.)

Short Description:
This open textbook is designed for those who are learning Chinese as a second/foreign language in their second semester. It has six chapters, covering topics including describing school life, shopping in stores and online, transportation means, reporting weather and climates, ordering foods, and asking and giving directions.

Long Description:
Elementary Chinese II is aimed at those who have learned Chinese as a second/foreign language for one semester, using the OER textbook “Elementary Chinese I“.

This open textbook contains six main lessons, including topics such as school life, shopping, transportation, weather, eating out, and asking and giving directions. They are organized in a straightforward and well-structured manner that are easy to follow. Within each lesson, there are a set of two dialogues or a set of one dialogue plus one narration. The texts of the dialogues or narrations are created to provide real-life Chinese language to beginning learners. After the texts, vocabulary words are listed for them to study and review. Grammatical points are explained in English and example sentences are provided for students to understand. Each dialogue or narration ends with culture notes where learners can read and better understand the target text.

Word Count: 20224

ISBN: 978-1-62610-116-6

(Note: This resource's metadata has been created automatically by reformatting and/or combining the information that the author initially provided as part of a bulk import process.)

This text is intended for a brief introductory course in plane geometry. It covers the topics from elementary geometry that are most likely to be required for more advanced mathematics courses. The only prerequisite is a semester of algebra.

The emphasis is on applying basic geometric principles to the numerical solution of problems. For this purpose the number of theorems and definitions is kept small. Proofs are short and intuitive, mostly in the style of those found in a typical trigonometry or precalculus text. There is little attempt to teach theorem-proving or formal methods of reasoning. However the topics are ordered so that they may be taught deductively.

The problems are arranged in pairs so that just the odd-numbered or just the even-numbered can be assigned. For assistance, the student may refer to a large number of completely worked-out examples. Most problems are presented in diagram form so that the difficulty of translating words into pictures is avoided. Many problems require the solution of algebraic equations in a geometric context. These are included to reinforce the student's algebraic and numerical skills, A few of the exercises involve the application of geometry to simple practical problems. These serve primarily to convince the student that what he or she is studying is useful. Historical notes are added where appropriate to give the student a greater appreciation of the subject.

This book is suitable for a course of about 45 semester hours. A shorter course may be devised by skipping proofs, avoiding the more complicated problems and omitting less crucial topics.

Elementary Differential Equations with Boundary Value Problems is written for students in science, engineering, and mathematics who have completed calculus through partial differentiation. If your syllabus includes Chapter 10 (Linear Systems of Differential Equations), your students should have some preparation in linear algebra. In writing this book I have been guided by the these principles: An elementary text should be written so the student can read it with comprehension without too much pain. I have tried to put myself in the student's place, and have chosen to err on the side of too much detail rather than not enough. An elementary text can't be better than its exercises. This text includes 2041 numbered exercises, many with several parts. They range in difficulty from routine to very challenging. An elementary text should be written in an informal but mathematically accurate way, illustrated by appropriate graphics. I have tried to formulate mathematical concepts succinctly in language that students can understand. I have minimized the number of explicitly stated theorems and defonitions, preferring to deal with concepts in a more conversational way, copiously illustrated by 299 completely worked out examples. Where appropriate, concepts and results are depicted in 188 figures

Biology, Chemistry, Physics, Space, and Earth Science

Word Count: 74440

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This book is intended for use by future teachers, written from the perspective of students who have taken Science Methods II. The student authors gathered and created resources to help prospective elementary cience teachers better understand science and feel confident in your abilities as a future teacher.
This book is divided into five parts which align with the Science Methods II course:

Physics
Space Science
Earth Science
Climate Science
Course Materials and Pedagogy

Within each part, the material is broken down into smaller chapters. Here you will find written explanations, video links, glossary terms, key takeaways, and practice quizzes to help you understand the material. This book is designed to be a flexible resource; use it as much or as little as you need throughout the course.

The need for this particular grammar arises from the peculiar shape of the MDiv curriculum at Asbury Theological Seminary. Several years ago the faculty adopted a curriculum that required one semester of Greek and one semester of Hebrew, each as preparatory for a basic exegesis course in each discipline.

It became clear after several years of trial and error that a “lexical” or “tools” approach to learning Greek and Hebrew was inadequate, no matter how skilled the instructors or how motivated the students. In today's general vacuum of grammatical training in public education across the United States, students typically enter seminary training with no knowledge of how languages work. Any training we might give them in accessing grammatical information through the use of Bible software programs will, we learned, come to naught in the absence of an understanding of just what such information actually means. We agreed that we actually needed to “teach the language itself,” at least in some rudimentary fashion, if we hoped students would make sense of grammatical and linguistic issues involved biblical interpretation.

The first 12 chapters of this grammar are designed to correspond to the first semester's instructional agenda. In these chapters we introduce all the parts of speech, explain and drill the basic elements of grammar, set forth the larger verb system (excluding the perfect system), teach the tenses of the Indicative Mood only (again, excluding the perfect system), and help students build a vocabulary of all NT words occurring 100 times or more. We also lead students into the NT itself with carefully chosen examples, while at the same time guiding them in each lesson to learn the use of the standard NT lexicon [BDAG] and an exegetical grammar [Wallace's Greek Grammar Beyond the Basics]. We are well aware of the limitations of this approach, but genuinely believe that some instruction along these lines is better than none, and that such an approach provide a foundation for students interested in moving beyond the first semester (into chapters 13-24) into a firmer grasp of the language of the NT.