To fairly evaluate students working in this environment, teachers need a clear specification of skills students need for design tasks and prescriptions for how teachers can effectively support their skills (see also Agnew, Kellerman & Meyer, 1992). Specification of skills and prescriptions of support are two parts of assessment that must be linked for fair assessment. If a skill cannot be supported by. the teacher or some kind of scaffolding technique, then it cannot be fairly evaluated. It may, in fact, be outside the zone of proximal development and beyond the current capability of the student. One of the teacher's jobs in a REAL is to specify skills and performances that can be supported so that the student can grow in ability. Carver et al. (1992) break the important behaviors for their environment into: