"The World Bank eAtlas of Global Development maps and graphs more than 175 thematically organized indicators for over 200 countries, letting you visualize and compare progress on the most important development challenges facing our world. Most indicators cover several decades, so you can see, for example, how 'life expectancy at birth' has improved from 1960 up through the latest year."  This tool should greatly enhance student projects as they will add more data, and see bigger patterns.  To go to the link visit: http://www.app.collinsindicate.com/worldbankatlas-global/en

Via Seth Dixon