References
- Beane , J. A. 1993 . A middle school curriculum: From rhetoric to reality, , 2d ed. , Columbus, Oh. : National Middle School Association .
- Environmental Systems Research Institute (ESRI), Inc. 1998 . GIS in K-12 education: An ESRI white paper—March, 1998 , Redlands, Calif. : ESRI .
- Geographic Education Standards Project. 1994 . Geography for life: National geography standards 1994 , Washington, D.C. : National Geographic Society .
- Lieberman , G. A. and Hoody , L. L. 1998 . Closing the achievement gap: Using the environment as an integrating context for learning , San Diego, Calif. : State Education and Environment Roundtable .
- MacEachren , A. M. 1995 . How maps work , New York : Guilford Press .
- National Middle School Association. 1992 . This we believe: Developmentally responsive middle level schools, , 2d. ed. , Columbus, Oh. : National Middle School Association .