6Wolfgang Schnotz, Thorsten Rasch. Enabling, Facilitating and Inhibiting Effects of Animations in Multimedia Learning : Why Reduction of Cognitive Lead Can Have Negative Results on Learning[ J]. Educational Technology, Research and Development; 2006,50 - 52.
7Huib K. Tabbers, Rob L. Martens, Jersen J. G. van Merrienboer. Multimedia instructions and cognitive load theory: Effects of modality and cueing [ OB/DL]. http ://www. bps. org. uk.
8Roxana Moreno, Alfred Valdez. Cognitive Load and Learning Effects of Having Students Organize Pictures and Words in Multimedia Environments: The Role of Student Interactivity and Feedback [ J ]. Educational Technology, Research and Development ;2005,35 - 45.