Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Siu Cheung Kong, Lam-for Kwok. A graphical partitioning model for learning common fraction: designing affordances on a web-supported learning environment. Computers & Education, 40(2):137-155, 2003. [doi]