The giant triangles enable a range of mathematical activities for all levels of knowledge. The triangles assemble easily into large 2D and 3D figures and construction most often involves collaboration.
We believe in the power of collaborative problem solving and have developed both focussed and open-ended activities. Teachers facilitate, guiding by asking questions rather than giving answers. This engages learners in discussion and sharing of ideas as each activity evolves. Peer negotiation, during construction, allows less knowledgeable learners to make sense of the group discussion, because it is about the hands-on work.
Most activities are initially intuitive and require very little prior knowledge. Asking learners to predict in advance the outcome of some actions with the triangles engages them in visualisation, development of meaningful geometric vocabulary, and can lead to a rigorous level of abstraction through well-planned activities.