Writing formal proofs is an outcome of the curriculum, not a beginning point. Ideas unfold over time. Students work on a topic over several days to give students multiple opportunities to understand the ideas. Student interaction and communication are the basis for learning. The teacher's role shifts from information-giver to facilitator.
Students learn to take responsibility for their own learning.
Students' levels of cognitive development are taken into account. We emphasize concrete, hands-on activities that promote students' understanding, with increasing formality as the year progresses. Materials address students of varying ability levels. The curriculum has been succesfully tested with students ranging from remedial to gifted, including heterogeneously grouped classes. Laboratory activities using manipulatives and computers.