Richard Mayer is one of the most influential educational researchers: His theory of multimedia learning is widely cited, and his resulting principles for how to design learning materials have become a ...

ABSTRACT A multimedia-based learning system to teach children with intellectual disabilities (ID) the basic living and science concepts is proposed. The tutorials' development is pedagogically based ...

Instructional Science, Vol. 39, No. 6 (November 2011), pp. 939-974 (36 pages) This is a design study meant to demonstrate the feasibility of integrating three rather different theoretical perspectives ...