What would happen if we have a percentage tax instead of a fixed dollar amount. Created by Sal Khan.

The most common forms of competition you learn about in microeconomics are perfect competition, monopolies, oligopoly, monopsony, and monopolistic competition. In this video we briefly describe the key features of each.

Examining the two extremes of elasticity, perfectly elastic and perfectly inelastic demand, can help us beter understand the intuition behind this measure. Created by Sal Khan.

As an “applied ethics” course, the goal is to help you understand the role that ethical (and other) values play in our lives, and how argumentation that involves values both depends on and differs from reasoning about non-evaluative matters. For even if agreement about matters of value is sometimes challenging, it is possible to think critically in ethical matters and to have better and worse arguments for our beliefs. Gaining proficiency in this sort of critical thinking isn’t just an academic need — it will help you understand and engage the world around you and be able to resist those who either intentionally or unintentionally would deceive you. This course is driven by concrete scenarios and real-world issues we face today, but it is framed by 2500 years of Western philosophy and the conceptual and analytical tools developed in this tradition. Thus, the course provides a good introduction to philosophy, and it will hopefully encourage some of you to pursue further study within the philosophy department.

This book is an introduction to philosophical ethics intended for use in introductory college or high school level courses. It has grown out of lecture notes I shared with the first students who took my online Ethics course at the Pennsylvania College of Technology almost 20 years ago. Since then it has seen more development in a variety of forms – starting out as a pdf document, and then evolving into a static set of WordPress pages and finally now as a book written in bookdown and hosted at GitHub. This text represents my attempt to scratch a couple of itches. The first is my wanting a presentation of the major philosophical approaches to ethics that I can actually agree with and that is integrated into my overall teaching method. I tend to teach philosophy to beginners and so there is a fair amount of discussion of the tools used by philosophers and of the ways in which their approach differs from that of their colleagues in other disciplines.

This text is intended as an introduction to questions of moral philosophy. While the text itself is a survey, covering many of the topics in a standard philosophy course, the aim here is twofold–first to teach students about the power of stories as a vehicle for understanding moral questions, and second to give students a set of interpretive tools that will allow them to make good ethical decisions in a world that is becoming more ethically complex. At the risk of claiming too much for a course in moral philosophy, the most important skill students need when entering the working world is not so much a knowledge of marketing or accounting, finance, programming, or venture capital, as an understanding of the diverse audiences they will be working with as both colleagues and customers. In essence, the most valuable skills employers need today are human skills. In a world where we are are all attached to our social media accounts and we live and die by how many pings we receive on our phone, this text attempts to do something more old-fashioned–to tell stories about people–about their feelings, thoughts, desires. This text hopes to show both that each individual is unique and that we are all for better and for worse separate beings, but at the same time that we share with other creatures on this planet a sense of living, a wish for respect and dignity, and a connection to all that is. In teaching to face head-on the contradiction between being different and yet like everyone else I hope that the text will give students the tools to negotiate this difference.

Continuation of Physics 1. Topics include: simple harmonic motion, gravitation, fluid mechanics, waves, the kinetic theory of gases, and the first and second laws of thermodynamics. This course is a calculus-based physics course that is required by four-year colleges in science and engineering studies.

This is a course for non-science majors that is a survey of the central concepts in physics relating everyday experiences with the principles and laws in physics on a conceptual level. Upon successful completion of this course, students will be able to: Describe basic principles of motion and state the law of inertia; Predict the motion of an object by applying Newtonęs laws when given the mass, a force, the characteristics of motion and a duration of time; Summarize the law of conservation of energy and explain its importance as the fundamental principle of energy as a –law of nature”; Explain the use of the principle of Energy conservation when applied to simple energy transformation systems; Define the Conservation of Energy Law as the 1st Law of Thermodynamics and State 2nd Law of Thermodynamics in 3 ways; Outline the limitations and risks associated with current societal energy practices,and explore options for changes in energy policy for the next century and beyond; Describe physical aspects of waves and wave motion; and explain the production of electromagnetic waves, and distinguish between the different parts of the electromagnetic spectrum.

The need for an OER textbook on conceptual physics led to the discovery of a short book Matthew Raspanti posted on the internet back in 2008. He agreed to a CC-BY-NC-SA licence that permits the text to reside on Wikiversity as a pdf file. It is available as a single 162 page document, as well as 20 much shorter documents to facilitate online navigation.

Each of these 20 sections links out of a WIKI page that will permit the submission and sharing of ancillary materials under a CC-BY-SA license. These wiki-pages can be organized to host an arbitrary number of submissions by students, as well as by instructors.

Planning Economics will apply microeconomic theory to issues that markets don't always handle well and so are not usually covered in a standard microeconomics course. Issues for this year include global warming, how you value a national park, the economics and politics of New York City development, how cities form and why people are willing to pay more to live in, say, the Boston Metro area, than they would pay to live in rural North Dakota, and how to evaluate costs and benefits that occur at different points in time.

What happens when all of the benefits of consumption are not captured in a demand curve? In this video we explore how to think about positive externalities in a market setting. Created by Sal Khan.

Precalculus is adaptable and designed to fit the needs of a variety of precalculus courses. It is a comprehensive text that covers more ground than a typical one- or two-semester college-level precalculus course. The content is organized by clearly-defined learning objectives, and includes worked examples that demonstrate problem-solving approaches in an accessible way.

Course Content:

Unit 1: Composite and inverse functions

Unit 2: Trigonometry

Unit 3: Complex numbers

Unit 4: Rational functions

Unit 5: Conic sections

Unit 6: Vectors

Unit 7: Matrices

Unit 8: Probability and combinatorics

Unit 9: Series

Unit 10: Limits and continuity

From the preface, "These are notes for a course in precalculus, as it is taught at New York City College of Technology - CUNY (where it is offered under the course number MAT 1375). Our approach is calculator based. For this, we will use the currently standard TI-84 calculator, and in particular, many of the examples will be explained and solved with it. However, we want to point out that there are also many other calculators that are suitable for the purpose of this course and many of these alternatives have similar functionalities as the calculator that we have chosen to use. An introduction to the TI-84 calculator together with the most common applications needed for this course is provided in appendix A. In the future we may expand on this by providing introductions to other calculators or computer algebra systems."

There are key differences between the way teaching and learning takes place in high schools and universities. Our goal is much more than just getting you to reproduce what was done in the classroom. Here are some key points to keep in mind:
• The pace of this course will be faster than a high school class in precalculus. Above that, we aim for greater command of the material, especially the ability to extend what we have learned to new situations.
• This course aims to help you build the stamina required to solve challenging and lengthy multi-step problems.
• As a rule of thumb, this course should on average take 15 hours of effort per week. That means that in addition to the 5 classroom hours per week, you would spend 10 hours extra on the class. This is only an average and my experience has shown that 12–15 hours of study per week (outside class) is a more typical estimate. In other words, for many students, this course is the equivalent of a halftime job!
• Because the course material is developed in a highly cumulative manner, we recommend that your study time be spread out evenly over the week, rather than in huge isolated blocks. An analogy with athletics is useful: If you are preparing to run a marathon, you must train daily; if you want to improve your time, you must continually push your comfort zone.

Precalculus: An Investigation of Functions is a free, open textbook covering a two-quarter pre-calculus sequence including trigonometry. The first portion of the book is an investigation of functions, exploring the graphical behavior of, interpretation of, and solutions to problems involving linear, polynomial, rational, exponential, and logarithmic functions. An emphasis is placed on modeling and interpretation, as well as the important characteristics needed in calculus.

Price discrimination is when a seller can charge different customers that are basically identical different prices in an attempt to extract as much profit as possible. In this video we explore how this is possible. Created by Sal Khan.