The course includes geometric objects, motions, solids, combinations of motions, measurement, dilations and similarity, using angles, properties of polygons, coordinates, proofs with parallel lines, area and perimeter, triangle similarity, volume and surface area, triangle congruence, proofs about polygons, circles, and other coordinate systems. A Moving Experience is available to teachers of high school geometry. Support services and a summer institute have been developed to help teachers implement the curriculum. Characteristics of Content Developing students' ability to solve geometric problems is the goal. Students encounter problems that challenge their knowledge of geometric concepts.
Transformations are the unifying theme of the curriculum.
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.