In general, multimodal learning has been shown to be more effective than traditional, unimodal learning. Adding visuals to verbal (text and/or auditory) learning can result in significant gains in basic and higher-order learning. The meta-analytic findings in this report provide insights into when interactivity augments multimodal learning of moderately to complex topics, and when it is advantageous for students to work individually when learning or building automaticity with basic skills.
Metiri Group. (2008). Multimodal Learning Through Media: What the Research Says. San Jose, CA: Cisco Systems.