My friend posted an interesting video on how the world has changed in terms of life expectancy and economic growth over the past 200 years. Hans Rosling explained few key aspects in Economics using an interesting tool - the Gapminder World - a visually appealing graph to illustrate the key concepts in Economics and their inter-relationships - and illustrates clearly on the widening gap between the richest and the poorest nations. It's interesting to note that although life expectancy in most countries have increased tremendously over the years, the economic growth gap between the developed and the less developing countries had grown bigger.
This presentation is a great way to simplify complex economic terms to students. Economics can be interesting, after all - it all depends on how it is explained and taught - not just rich with jargon; but if we start relating the concepts to our everyday living, we can see the bigger picture.