Research Design Explained - Instructor’s site for a textbook which has lectures, handouts, and activity ideas. Linked student site has self-tests, concept maps, and tutorials.
Research Methods - Online tutorial gives examples, practice, and a test to assist students in understanding the differences between experimental, correlational, survey, and other methods.
Wextor - Tool to help generate web pages for multi-condition (between and/or within subjects) experiments. Requires registration.