There is a demand for computational methods assisting learners to generate relevant associations for current context. Many concepts in natural language have ambiguous meanings implying alternative ways to define associations for them. It is crucial to develop collaborative methods that support free experiments with promising conceptual structures in learning. Methods for evaluating these structures in respect to the person’s needs are also required. We propose a new collaborative ideation scheme and based on that we have implemented an assistive tool for learning conceptual structures in a collaborative Web environment.