The understanding of complex, dynamic and animate systems has a special standing in education for sustainable development and biology. Thus one important role of science teacher education is to promote student teachers' Content Related Knowledge (CRK) for teaching systems thinking, consisting of extensive Content Knowledge (CK) and well formed…

The McKinney-Vento Homeless Education Assistance Improvements Act of 2001 (MCKV), which provides funds to local educational agencies (LEAs), is almost a decade old, yet no evaluations of its academic effectiveness have been reported. Using a systems theory framework, the authors answer the question of whether homeless students in grade 6 from LEAs…