Titel: Why some material is difficult to learn

Autor(en): Sweller, J. & Chandler, P.

Ort: In: Cognition and Instruction, Vol. 12, Issue 3, pp. 185-233

Erscheinungsjahr: 1994

Sweller, J. & Chandler, P. (1994): Why some material is difficult to learn: In: Cognition and Instruction, Vol. 12, Issue 3, pp. 185-233