This is a free and open set of course materials released by the Saylor Foundation, an educational charitye. It consists of eleven units, each with readings and other web resources.
Assessment Materials in Labour Economics, Employment and Unemployment
This archive uses presents feedback on multi-choice questions on 40 different topics, with varying numbers of questions in each. Many of the questions involve clickable images, with students using mouse clicks to indicate equilibria. Topics include: markets, firms, wages, national income, money, unemployment and inflation, government, and international.