Campaign for affordable textbooks. Web site contains a large catalogue of open textbooks.

This is the recipe for workshop, where participants hack the rules of existing videogames in response to topical issues, and prototype new games that are vessels of alternative values and messages.

This powerpoint highlights the stages of play as posited by Mildred Parten (1932)

The "quantum" of economics is the optimizing individual. All of economics ultimately boils down to the behavior of such individuals. Microeconomics studies their basic actions and interactions: individual markets, supply and demand, the impact of taxes, monopoly, etc. Macroeconomics then lumps together these individual markets to study national and international issues. In structure this book—which covers only microeconomics—is not unlike a hiking trip. We start out by putting our boots on and getting our gear together: in Part I we study the optimizing individual. Then we set out on our path and immediately find ourselves hacking through some pretty thick jungle: even simple interactions between just two people (Part II) can be very complicated! As we add even more people (in studying auctions, for example), things get even more complicated, and the jungle gets even thicker. Then a miracle occurs: we add even more people, and a complex situation suddenly becomes simple. After hacking through thick jungle, we find ourselves in a beautiful clearing: competitive markets (Part III) are remarkably easy to analyze and understand.

The Saint Paul Chamber Orchestra, founded in 1959, is widely regarded as one of the finest chamber orchestras in the world. In this free Listening Library, enjoy performances of more than 250 compositions written from 1691 to 2011.

This is an instructional video demonstrating how to subtract integers using colored chips to visually represent the subtraction rule of adding the opposite.

The focus of this website is to help in the transition from a paper oriented environment to one using OER materials with an emphasis in elementary and secondary school mathematics. The website's material is divided into five major topics: 1. Why OER materials? 2. The learner's environment - a world in change. 3. Mathematics past and present. 4. Exploring OER materials and 5. International mathematics education developments. An emphasis has been placed on linking to other OER materials to cover and expand on each topic.

This page contains a FAQ that attempts to answer the biggest questions that Arabic students routinely face, including everything from the general difficulty of learning the language to how to say certain things.The FAQ is extensive and based on the personal experiences of the owner of Desert-sky who is an advanced Arabic learner.

This webpage provides a fairly extensive list of animals, along with some insects. The Arabic names for animals and insects are listed in chart format, and include their English translation. The chart is prefaced with a brief commentary on Arabic grammar as it pertains to the chart.

This chart lists 11 colors in Arabic. The chart contains three columns that list the color in Arabic script, English transliteration, and English translation. Both the Arabic and English text correspond in color to the particular color being described.

This webpage lists Arabic numbers and English equivalents. The charts list the two types of numerals, the Arabic script, and the numerical English equivalent of the number.The numbers are presented sequentially until 20, and then larger numbers are listed and described.

This website displays a list of over 40 words related to family relationships in the Arabic language. Each relationship (father, son, daughter, aunt, etc.) is written in Arabic text, English translation, and English transliteration. Arabic words describing generic categories of people (old woman, young man, etc.) are also included.

This webpage presents a list of vocabulary words associated with seasons, days of the week, months, and the different types of calendars used in the Arabic-speaking world. The words are presented in chart format, and list the word in Arabic, English translation, and English transliteration.

TheGlobalEconomy.com is an open educational resource on the world economy. It is used by faculty and students at more than 150 colleges and universities around the world, researchers, journalists, and others. The website offers interactive data tools for over 200 countries. Users can generate and download custom charts that compare countries and track them over time. The data are updated regularly and are supplemented with definitions and sources. Besides providing data tools, we also explain key concepts about economic growth and development, exchange rates, international trade and investment, financial systems, and other topics. The guide offers a glossary of economic terms, suggestions for student research, and a directory of international organizations, blogs, media outlets, teaching tools, and other resources on the world economy.