Macroeconomics for Today - our text's website defines key terms andhas practice quizzes for each chapter; there are additional exercises if you have the accompanying CD

AmosWeb GLOSS*arama - glossary of economics terms for students

Math Skills for Introductory Economics - clear, detailed tutorial on variables, equations, graphs, linear equations, and slopes

Resources for ESL Students in Economics - information on confusing economics words, American slang and idoms, and links to useful resources, from CCSF Prof. David Landes

Resources for Economists on the Internet - huge site with 1700+ links to dictionaries, data sources, news media, economists, organizations, blogs, and neat stuff