Many recent technologies provide the ability to dynamically adjust the interface depending on the emerging cognitive and collaborative needs of the learning episode. This means that educators can adaptively re-design the learning environment during the lesson, rather than purely relying on preemptive learning design thinking. Based on a three-semester design-based research study this paper explores how adaptive learning design can be used to provide learning environments that enable more effective collaboration and representation of information. The analysis culminates in a framework for adaptive learning design of a web-conferencing environment that depends on the type of knowledge being represented and the nature of interaction anticipated. Heuristics for adaptive learning design in synchronous multimodal environments are presented, and the potential role of students as co-designers is also discussed.