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This program discusses the stages and ramifications of grief, mourning and bereavement, and the effects of professional interventions. Aspects of grief and loss include physical and mental deteriorati

An anthology of essays on gender-related issues that affect the actions and beliefs of women and men in our society. Authors are male and female, gay and straight, and touch on issues including oppres

Every feature in this text is deigned to help you learn calculus. Whenever you see a red u, pay special attention to the study aid. The Study Tips occur at point of use throughout the text. They represent common questions the students ask me, insights into understanding concepts, and alternative ways to look at concepts. This includes graphing calculators, computer graphing programs, and spreadsheet programs such as Excel.

Every feature in this text is deigned to help you learn calculus. Whenever you see a red u, pay special attention to the study aid. The Study Tips occur at point of use throughout the text. They represent common questions the students ask me, insights into understanding concepts, and alternative ways to look at concepts. This includes graphing calculators, computer graphing programs, and spreadsheet programs such as Excel.

Gain a solid understanding of what is arguably the most critical and complex component of global supply chains with Novack/Gibson/Suzuki's TRANSPORTATION: A GLOBAL SUPPLY CHAIN PERSPECTIVE, 10E. You learn the fundamental role and importance of transportation in companies and society as you study the current complex environment of transportation service. The authors introduce the role of transportation in supply chains and provide an overview of the operating and service characteristics, cost structure and challenges that today's transportation providers face. Updates throughout this edition highlight critical transportation management issues with insights into the strategic activities and challenges in the movement of goods through the supply chain. You examine global topics with the latest coverage of hard and soft technology and interesting discussions of fuel, energy, managerial, economic and environmental issues.

Cummings/Worley's ORGANIZATION DEVELOPMENT AND CHANGE, 12th Edition, is the most widely-used textbook in the field. It blends rigor and relevance in a comprehensive and clear presentation. The authors work from a strong evidence-based foundation to describe, in practical terms, how behavioral science knowledge can be used to help organizations develop strategies, structures and processes for superior performance, sustainability and social outcomes.

DescriptionTrailblazer cultivates critical thinkers, readers, and writers and provides the language support they need to be ready to study subject-matter content in English. Trailblazing students take meaningful action beyond the classroom by developing the ability to shape their own answers to life’s big questions, and to view these questions through multiple perspectives.A multiple literacy approach helps prepare students for meaningful real-world interaction.Authentic non-fiction, globally diverse fiction, and information presented through multi-media inputs prompt students to think critically and apply their language and skills to real-world contexts.The real-life stories of National Geographic Explorers inspire a new generation of trailblazing students to make a positive impact on their community.Assessment of English language skills and strategies helps instructors to track learning outcomes, and students to meet their learning goals, including success on international exams.Inte

DescriptionTrailblazer cultivates critical thinkers, readers, and writers and provides the language support they need to be ready to study subject-matter content in English. Trailblazing students take meaningful action beyond the classroom by developing the ability to shape their own answers to life’s big questions, and to view these questions through multiple perspectives.A multiple literacy approach helps prepare students for meaningful real-world interaction.Authentic non-fiction, globally diverse fiction, and information presented through multi-media inputs prompt students to think critically and apply their language and skills to real-world contexts.The real-life stories of National Geographic Explorers inspire a new generation of trailblazing students to make a positive impact on their community.Assessment of English language skills and strategies helps instructors to track learning outcomes, and students to meet their learning goals, including success on international exams.Inte

DescriptionTrailblazer cultivates critical thinkers, readers, and writers and provides the language support they need to be ready to study subject-matter content in English. Trailblazing students take meaningful action beyond the classroom by developing the ability to shape their own answers to life’s big questions, and to view these questions through multiple perspectives.A multiple literacy approach helps prepare students for meaningful real-world interaction.Authentic non-fiction, globally diverse fiction, and information presented through multi-media inputs prompt students to think critically and apply their language and skills to real-world contexts.The real-life stories of National Geographic Explorers inspire a new generation of trailblazing students to make a positive impact on their community.Assessment of English language skills and strategies helps instructors to track learning outcomes, and students to meet their learning goals, including success on international exams.Inte

DescriptionTrailblazer cultivates critical thinkers, readers, and writers and provides the language support they need to be ready to study subject-matter content in English. Trailblazing students take meaningful action beyond the classroom by developing the ability to shape their own answers to life’s big questions, and to view these questions through multiple perspectives.A multiple literacy approach helps prepare students for meaningful real-world interaction.Authentic non-fiction, globally diverse fiction, and information presented through multi-media inputs prompt students to think critically and apply their language and skills to real-world contexts.The real-life stories of National Geographic Explorers inspire a new generation of trailblazing students to make a positive impact on their community.Assessment of English language skills and strategies helps instructors to track learning outcomes, and students to meet their learning goals, including success on international exams.Inte

DescriptionTrailblazer cultivates critical thinkers, readers, and writers and provides the language support they need to be ready to study subject-matter content in English. Trailblazing students take meaningful action beyond the classroom by developing the ability to shape their own answers to life’s big questions, and to view these questions through multiple perspectives.A multiple literacy approach helps prepare students for meaningful real-world interaction.Authentic non-fiction, globally diverse fiction, and information presented through multi-media inputs prompt students to think critically and apply their language and skills to real-world contexts.The real-life stories of National Geographic Explorers inspire a new generation of trailblazing students to make a positive impact on their community.Assessment of English language skills and strategies helps instructors to track learning outcomes, and students to meet their learning goals, including success on international exams.Inte

DescriptionTrailblazer cultivates critical thinkers, readers, and writers and provides the language support they need to be ready to study subject-matter content in English. Trailblazing students take meaningful action beyond the classroom by developing the ability to shape their own answers to life’s big questions, and to view these questions through multiple perspectives.A multiple literacy approach helps prepare students for meaningful real-world interaction.Authentic non-fiction, globally diverse fiction, and information presented through multi-media inputs prompt students to think critically and apply their language and skills to real-world contexts.The real-life stories of National Geographic Explorers inspire a new generation of trailblazing students to make a positive impact on their community.Assessment of English language skills and strategies helps instructors to track learning outcomes, and students to meet their learning goals, including success on international exams.Inte

DescriptionTrailblazer cultivates critical thinkers, readers, and writers and provides the language support they need to be ready to study subject-matter content in English. Trailblazing students take meaningful action beyond the classroom by developing the ability to shape their own answers to life’s big questions, and to view these questions through multiple perspectives.A multiple literacy approach helps prepare students for meaningful real-world interaction.Authentic non-fiction, globally diverse fiction, and information presented through multi-media inputs prompt students to think critically and apply their language and skills to real-world contexts.The real-life stories of National Geographic Explorers inspire a new generation of trailblazing students to make a positive impact on their community.Assessment of English language skills and strategies helps instructors to track learning outcomes, and students to meet their learning goals, including success on international exams.Inte

DescriptionTrailblazer cultivates critical thinkers, readers, and writers and provides the language support they need to be ready to study subject-matter content in English. Trailblazing students take meaningful action beyond the classroom by developing the ability to shape their own answers to life’s big questions, and to view these questions through multiple perspectives.A multiple literacy approach helps prepare students for meaningful real-world interaction.Authentic non-fiction, globally diverse fiction, and information presented through multi-media inputs prompt students to think critically and apply their language and skills to real-world contexts.The real-life stories of National Geographic Explorers inspire a new generation of trailblazing students to make a positive impact on their community.Assessment of English language skills and strategies helps instructors to track learning outcomes, and students to meet their learning goals, including success on international exams.Inte

DescriptionTrailblazer cultivates critical thinkers, readers, and writers and provides the language support they need to be ready to study subject-matter content in English. Trailblazing students take meaningful action beyond the classroom by developing the ability to shape their own answers to life’s big questions, and to view these questions through multiple perspectives.A multiple literacy approach helps prepare students for meaningful real-world interaction.Authentic non-fiction, globally diverse fiction, and information presented through multi-media inputs prompt students to think critically and apply their language and skills to real-world contexts.The real-life stories of National Geographic Explorers inspire a new generation of trailblazing students to make a positive impact on their community.Assessment of English language skills and strategies helps instructors to track learning outcomes, and students to meet their learning goals, including success on international exams.Inte

DescriptionTrailblazer cultivates critical thinkers, readers, and writers and provides the language support they need to be ready to study subject-matter content in English. Trailblazing students take meaningful action beyond the classroom by developing the ability to shape their own answers to life’s big questions, and to view these questions through multiple perspectives.A multiple literacy approach helps prepare students for meaningful real-world interaction.Authentic non-fiction, globally diverse fiction, and information presented through multi-media inputs prompt students to think critically and apply their language and skills to real-world contexts.The real-life stories of National Geographic Explorers inspire a new generation of trailblazing students to make a positive impact on their community.Assessment of English language skills and strategies helps instructors to track learning outcomes, and students to meet their learning goals, including success on international exams.Inte

DescriptionTrailblazer cultivates critical thinkers, readers, and writers and provides the language support they need to be ready to study subject-matter content in English. Trailblazing students take meaningful action beyond the classroom by developing the ability to shape their own answers to life’s big questions, and to view these questions through multiple perspectives.A multiple literacy approach helps prepare students for meaningful real-world interaction.Authentic non-fiction, globally diverse fiction, and information presented through multi-media inputs prompt students to think critically and apply their language and skills to real-world contexts.The real-life stories of National Geographic Explorers inspire a new generation of trailblazing students to make a positive impact on their community.Assessment of English language skills and strategies helps instructors to track learning outcomes, and students to meet their learning goals, including success on international exams.Inte

DescriptionTrailblazer cultivates critical thinkers, readers, and writers and provides the language support they need to be ready to study subject-matter content in English. Trailblazing students take meaningful action beyond the classroom by developing the ability to shape their own answers to life’s big questions, and to view these questions through multiple perspectives.A multiple literacy approach helps prepare students for meaningful real-world interaction.Authentic non-fiction, globally diverse fiction, and information presented through multi-media inputs prompt students to think critically and apply their language and skills to real-world contexts.The real-life stories of National Geographic Explorers inspire a new generation of trailblazing students to make a positive impact on their community.Assessment of English language skills and strategies helps instructors to track learning outcomes, and students to meet their learning goals, including success on international exams.Inte

DescriptionTrailblazer cultivates critical thinkers, readers, and writers and provides the language support they need to be ready to study subject-matter content in English. Trailblazing students take meaningful action beyond the classroom by developing the ability to shape their own answers to life’s big questions, and to view these questions through multiple perspectives.A multiple literacy approach helps prepare students for meaningful real-world interaction.Authentic non-fiction, globally diverse fiction, and information presented through multi-media inputs prompt students to think critically and apply their language and skills to real-world contexts.The real-life stories of National Geographic Explorers inspire a new generation of trailblazing students to make a positive impact on their community.Assessment of English language skills and strategies helps instructors to track learning outcomes, and students to meet their learning goals, including success on international exams.Inte

OverviewLife is a six-level, best-selling integrated-skills series with grammar and vocabulary for young adult and adult English language learners. Known for teaching students something new about the world through inspiring National Geographic content, the third edition showcases global perspectives and contexts relevant to students’ own lives that guide them to naturally personalize the language. Life continues to help learners connect with the world through its deeply integrated critical thinking strand, which now extends to developing the visual literacy, collaboration, and problem-solving skills they need for academic and career success.Critical thinking skills development now extends into updated video lessons by developing visual literacy skills and encouraging a positive global mindset through ‘Sustainable Life’ project-based lessons.Targeted skills development and exam-style task types prepare students for success in international exams like the Cambridge suite and IELTs.The al

OverviewLife is a six-level, best-selling integrated-skills series with grammar and vocabulary for young adult and adult English language learners. Known for teaching students something new about the world through inspiring National Geographic content, the third edition showcases global perspectives and contexts relevant to students’ own lives that guide them to naturally personalize the language. Life continues to help learners connect with the world through its deeply integrated critical thinking strand, which now extends to developing the visual literacy, collaboration, and problem-solving skills they need for academic and career success.Critical thinking skills development now extends into updated video lessons by developing visual literacy skills and encouraging a positive global mindset through ‘Sustainable Life’ project-based lessons.Targeted skills development and exam-style task types prepare students for success in international exams like the Cambridge suite and IELTs.The al

OverviewLife is a six-level, best-selling integrated-skills series with grammar and vocabulary for young adult and adult English language learners. Known for teaching students something new about the world through inspiring National Geographic content, the third edition showcases global perspectives and contexts relevant to students’ own lives that guide them to naturally personalize the language. Life continues to help learners connect with the world through its deeply integrated critical thinking strand, which now extends to developing the visual literacy, collaboration, and problem-solving skills they need for academic and career success.Critical thinking skills development now extends into updated video lessons by developing visual literacy skills and encouraging a positive global mindset through ‘Sustainable Life’ project-based lessons.Targeted skills development and exam-style task types prepare students for success in international exams like the Cambridge suite and IELTs.The al

OverviewLife is a six-level, best-selling integrated-skills series with grammar and vocabulary for young adult and adult English language learners. Known for teaching students something new about the world through inspiring National Geographic content, the third edition showcases global perspectives and contexts relevant to students’ own lives that guide them to naturally personalize the language. Life continues to help learners connect with the world through its deeply integrated critical thinking strand, which now extends to developing the visual literacy, collaboration, and problem-solving skills they need for academic and career success.Critical thinking skills development now extends into updated video lessons by developing visual literacy skills and encouraging a positive global mindset through ‘Sustainable Life’ project-based lessons.Targeted skills development and exam-style task types prepare students for success in international exams like the Cambridge suite and IELTs.The al

OverviewLife is a six-level, best-selling integrated-skills series with grammar and vocabulary for young adult and adult English language learners. Known for teaching students something new about the world through inspiring National Geographic content, the third edition showcases global perspectives and contexts relevant to students’ own lives that guide them to naturally personalize the language. Life continues to help learners connect with the world through its deeply integrated critical thinking strand, which now extends to developing the visual literacy, collaboration, and problem-solving skills they need for academic and career success.Critical thinking skills development now extends into updated video lessons by developing visual literacy skills and encouraging a positive global mindset through ‘Sustainable Life’ project-based lessons.Targeted skills development and exam-style task types prepare students for success in international exams like the Cambridge suite and IELTs.The al

OverviewLife is a six-level, best-selling integrated-skills series with grammar and vocabulary for young adult and adult English language learners. Known for teaching students something new about the world through inspiring National Geographic content, the third edition showcases global perspectives and contexts relevant to students’ own lives that guide them to naturally personalize the language. Life continues to help learners connect with the world through its deeply integrated critical thinking strand, which now extends to developing the visual literacy, collaboration, and problem-solving skills they need for academic and career success.Critical thinking skills development now extends into updated video lessons by developing visual literacy skills and encouraging a positive global mindset through ‘Sustainable Life’ project-based lessons.Targeted skills development and exam-style task types prepare students for success in international exams like the Cambridge suite and IELTs.The al

About this BookThis three-book series is designed to help English learners to build, develop, and moster their language skills for the TOEIC* test. Each book contains vocabulary and passages at different levels.New TOEIC* Skills 1 is for learners aiming at a score of between 450 and 550 points.New TOEIC Skills 2 is for learners whose target score is between 650 and 750 points.New TOEIC* Skills 3 is aimed at learners who are working toward a score of 850-990 points.This book can be used in a classroom with a teacher, or it can be used by learners on their own.Prepare for the TOEIC® test with essential vocabulary, skill lessons, and practice tests on 12 areas of Business English.Jobs * Housing * Activities * Health * Weather * Money Shopping * Medicine * Business * Travel * Food * EducationImportant content-based vocabulary is introduced with definitions and a list of related words to extend active use of words. Units are structured to review grammar, listening, and reading skills necess

About this BookThis three-book series is designed to help English learners to build, develop, and moster their language skills for the TOEIC* test. Each book contains vocabulary and passages at different levels.New TOEIC* Skills 1 is for learners aiming at a score of between 450 and 550 points.New TOEIC Skills 2 is for learners whose target score is between 650 and 750 points.New TOEIC* Skills 3 is aimed at learners who are working toward a score of 850-990 points.This book can be used in a classroom with a teacher, or it can be used by learners on their own.Prepare for the TOEIC® test with essential vocabulary, skill lessons, and practice tests on 12 areas of Business English.Jobs * Housing * Activities * Health * Weather * Money Shopping * Medicine * Business * Travel * Food * EducationImportant content-based vocabulary is introduced with definitions and a list of related words to extend active use of words. Units are structured to review grammar, listening, and reading skills necess

OverviewThe world is an amazing place.Get up close with Look, a seven-level series for young learners of English.See something real with amazing photography, authentic stories and video, and inspiring National Geographic Explorers.Help learners make connections in English between their lives and the world they live in through high-interest, global topics that encourage them to learn and express themselves.With short, fresh lessons that excite students and make teaching a joy, Look gives young learners the core language, balanced skills foundation and confidence-boosting exam support they need to use English successfully in the 21st century.Easy-to-teach units present high-interest topics with a global perspectiveCarefully graded language syllabus with balanced skills coverage and a phonics focusIntegrated values activities support personal developmentImmersive School Trips lessons take learners to incredible places and provide project work opportunitiesReading Extra lessons promote ext

CALCULUS: EARLY TRANSCENDENTALS, Metric, 9th Edition provides you with the strongest foundation for a STEM future. James Stewart's Calculus, Metric series is the top-seller in the world because of its problem-solving focus, mathematical precision and accuracy, and outstanding examples and problem sets. Selected and mentored by Stewart, coauthors Daniel Clegg and Saleem Watson continue his legacy, and their careful refinements retain Stewart's clarity of exposition and make the 9th Edition an even more usable learning tool. The accompanying WebAssign includes helpful learning support and new resources like Explore It interactive learning modules. Showing that Calculus is both practical and beautiful, the Stewart approach.

Learn to market effectively using social media with the unique emphasis and best practices found only in SOCIAL MEDIA MARKETING: A STRATEGIC APPROACH, 3E. You learn how to create a strong personal brand that is invaluable at any stage of your career, as you master the social media techniques detailed throughout this popular book. Insightful discussions address both online and offline elements for creating a viable personal branding strategy. Expanded coverage of consumer behavior guides you in identifying with virtual communities and mastering visual storytelling. This edition delves deeper into using content marketing, while new chapters address managing today's digital marketing organization and using paid advertising and social media influencers. A step-by-step planning model leads you through creating an actual social media marketing plan. You also learn how to incorporate important branding strategies within your organization’s overall integrated marketing communication approach.

DescriptionBook 1 of the Springboard series is designed to assist learners of English in adapting to their workplace environment. The series includes a variety of topics that are specifically tailored for today's learners.FEATURESListening comprehension exercises develop learners' listening skills by entertaining them with lively conversations and talks.Vocabulary activities help learners better remember newly learned terms by putting them to use.Reading passages develop learners' reading comprehension skills using a variety of topics related to the modern business world.Short dialogues engage learners with useful topic-based phrases.Each unit's Grammar Focus outlines key points and allows students to put tips into practice.Class activities allow teachers to get learners out of their seats and speaking with classmates.

DescriptionBook 2 of the Springboard series is designed to assist learners of English in adapting to their workplace environment. The series includes a variety of topics that are specifically tailored for today's learners.FEATURESListening comprehension exercises develop learners' listening skills by entertaining them with lively conversations and talks.Vocabulary activities help learners better remember newly learned terms by putting them to use.Reading passages develop learners' reading comprehension skills using a variety of topics related to the modern business world.Short dialogues engage learners with useful topic-based phrases.Each unit's Grammar Focus outlines key points and allows students to put tips into practice.Class activities allow teachers to get learners out of their seats and speaking with classmates.

Description Pathways Reading，Writing，and Critical Thinking is a best-selling，five-level academic skills series that combines highly visual，real-world content and rigorous language instruction to help students develop the skills，language，and critical thinking they need for academic success。 Exploring academic topics through authentic readings，videos，photos，and infographics，students connect to ideas while building academic competence skills through collaboration，communication，and problem-solving。 Pathways helps students to improve the academic and interpersonal skills needed to succeed in and out of the classroom。 NEW in Pathways: Reading，Writing，and Critical Thinking • Relatable academic readings engage students and inform them on various topics，while helping improve reading comprehension skills to succeed in and out of the classroom。 • The Writing section provides even more guided instruction，explicit models，and practice opportunities to equip students with the skills needed

Description Pathways Reading，Writing，and Critical Thinking is a best-selling，five-level academic skills series that combines highly visual，real-world content and rigorous language instruction to help students develop the skills，language，and critical thinking they need for academic success。 Exploring academic topics through authentic readings，videos，photos，and infographics，students connect to ideas while building academic competence skills through collaboration，communication，and problem-solving。 Pathways helps students to improve the academic and interpersonal skills needed to succeed in and out of the classroom。 NEW in Pathways: Reading，Writing，and Critical Thinking • Relatable academic readings engage students and inform them on various topics，while helping improve reading comprehension skills to succeed in and out of the classroom。 • The Writing section provides even more guided instruction，explicit models，and practice opportunities to equip students with the skills needed

Description Pathways Reading，Writing，and Critical Thinking is a best-selling，five-level academic skills series that combines highly visual，real-world content and rigorous language instruction to help students develop the skills，language，and critical thinking they need for academic success。 Exploring academic topics through authentic readings，videos，photos，and infographics，students connect to ideas while building academic competence skills through collaboration，communication，and problem-solving。 Pathways helps students to improve the academic and interpersonal skills needed to succeed in and out of the classroom。 NEW in Pathways: Reading，Writing，and Critical Thinking • Relatable academic readings engage students and inform them on various topics，while helping improve reading comprehension skills to succeed in and out of the classroom。 • The Writing section provides even more guided instruction，explicit models，and practice opportunities to equip students with the skills needed

Description Pathways Reading，Writing，and Critical Thinking is a best-selling，five-level academic skills series that combines highly visual，real-world content and rigorous language instruction to help students develop the skills，language，and critical thinking they need for academic success。 Exploring academic topics through authentic readings，videos，photos，and infographics，students connect to ideas while building academic competence skills through collaboration，communication，and problem-solving。 Pathways helps students to improve the academic and interpersonal skills needed to succeed in and out of the classroom。 NEW in Pathways: Reading，Writing，and Critical Thinking • Relatable academic readings engage students and inform them on various topics，while helping improve reading comprehension skills to succeed in and out of the classroom。 • The Writing section provides even more guided instruction，explicit models，and practice opportunities to equip students with the skills needed

Straightforward and easy to read, Zill's A FIRST COURSE IN DIFFERENTIAL EQUATIONS WITH MODELING APPLICATIONS, 12th EDITION, gives you a thorough overview of the topics typically taught in a first course in differential equations. Your study of differential equations and its applications is supported by a bounty of pedagogical aids, including an abundance of examples, explanations, "Remarks" boxes, definitions and more.

This comprehensive and engaging text presents the complexities of strategic management through up-to-date scholarship and hands-on applications. Highly respected authors Charles Hill and Melissa Schilling integrate cutting-edge research on topics including competitive advantage, corporate governance, diversification, strategic leadership, technology and innovation, and corporate social responsibility through both theory and case studies. Based on real-world practices and current thinking in the field, the 14th edition features an increased emphasis on the changing global economy and its role in strategic management. The appendix walks students through the case-analysis process, and explains key ratios that managers use to compare the performance of firms. The high-quality case study program contains 31 cases covering small, medium, and large companies from a large range of industries and nations. Featured cases in this edition include Tesla Motors, Alibaba, Google, Microsoft, Boeing, I

OverviewExplore the latest developments in biological psychology today with the most widely used text for this area of study: Dr. James Kalat's BIOLOGICAL PSYCHOLOGY, 14E. This edition uses a clear writing style, precise examples and the latest research to make biological psychology understandable and to emphasize its importance to psychology as well as biology and pre-med study. Thought-provoking content, insights from contemporary researchers, amusing anecdotes and even try-it-yourself activities help convey the excitement behind biological explanations of behavior. This edition introduces breakthrough findings with more than 500 new research references as recent as 2022. You explore new insights into brain functions, autism, antidepressants and mental enhancement and weight-loss drugs as well as the latest on auditory changes, pain mechanisms and the olfactory effects of COVID-19. Cengage Infuse digital resources are also available with interactive learning tools.

DescriptionWelcome to the International Metric Version of Essential Calculus: Early Transcendental Functions. For this metric version, the units of measurement used in most of the examples and exercises have been changed from U.S. Customary units to metric units. We did not convert problems that are specific to the U.S. Customary units, such as dimensions of a baseball field or U.S. postal rates. We are excited to offer you a new edition with more resources then ever that will help you understand and master calculus. This text includes features and resources that continue to make Essential Calculus: Early Transcendental Functions a valuable learning tool for students and a trustworthy teaching tool for instructors.Essential Calculus: Early Transcendental Functions provides the clear instruction, precise mathematics, and thorough coverage that you expect for your course.FeaturesNEW Big Ideas of CalculusWe have added a new feature to help you discover and understand the Big Ideas of Calc