At its peak in the early 20th century, Britain's empire was the largest in the history of the world, greater even than that of ancient Rome. It embraced more than a fourth of the world's population and affected the course of Western civilization in ways almost too numerous to imagine.

We are all economists—when we work, buy, save, invest, pay taxes, and vote. It repays us many times over to be good economists. Economic issues are active in our lives every day. However, when the subject of economics comes up in conversation or on the news, we can find ourselves longing for a more sophisticated understanding of the fundamentals of economics.

Discrete mathematics achieves fascinating results using relatively simple means, such as counting. Explore this modern mathematical realm in Discrete Mathematics, 24 mind-expanding lectures delivered by popular Teaching Company Professor Arthur T. Benjamin. Covering combinatorics, number theory, and graph theory, this intriguing course is an ideal point of entry for you to start thinking more mathematically. While certainly rigorous, this entertaining course is accessible to anyone with a basic knowledge of high-school algebra and a willingness to learn logical thinking skills essential to living everyday life—as well as success in any future math courses you may take.

Intended for a one- or two-semester combined elementary and intermediate algebra course, Exploring Introductory and Intermediate Algebra: A Graphing Approach is designed to assist students in making connections between mathematics and its applications. Its goal is to develop a student's mathematical skills through appropriate use of applications and to use technology to establish links between abstract mathematical concepts and visual or concrete representations.

Embark on a fascinating foray into the complex and enthralling field of meteorology: the study of the weather. In the 24 engaging lectures of Meteorology: An Introduction to the Wonders of the Weather, learn about the often surprising, always intriguing interactions that make up our world's climate. Bringing together geography, chemistry, physics, and other scientific disciplines, Professor Robert G. Fovell offers you fresh and illuminating insights into weather of your everyday life.

In 96 richly illustrated half-hour lectures you will survey the main concepts, methods, and discoveries in astronomy—from the constellations drawn by the ancients, to the latest reports from planetary probes in our Solar System and the most recent images offered by telescopes probing the farthest frontiers of space and time. While updating this course, Professor Alex Filippenko added hundreds of images, including nearly 300 short movies and computer animations.

Chalk Dust Productions are like Math Tutor DVD: low budget, low-tech with a guy and his chalkboard. These are specially commissioned by Houghton Mifflin to supplement their various textbooks, but it is not necessary at all to possess the textbooks in order to benefit from these videos.

How do you mathematically describe the world around you? Discover the fascinating answer with The Shape of Nature, a visually stunning and authoritative guide to the mathematical shapes around you: how they're formed, how they're studied, and how they relate to your life. In 36 lectures, you'll discover the intricate relationship between mathematics and nature, get a pointed introduction to the languages mathematicians use to study shapes and dimensions, and learn how to finally make sense of this abstract—yet undeniably intriguing—subject. And it's all brought to you by Professor Satyan L. Devadoss, a dynamic instructor with an abiding and contagious passion for his field.

ManhattanGMAT 9-Session Courses, led by experienced Instructors with 99th percentile overall scores on the GMAT, impart the comprehensive understanding of GMAT content and test-taking skills required to score well on the exam.