Geography Education Standards Project. (1994). Geography for life: National geography standards 1994. Washington, xxxxx DC: National Geography Research & Exploration.
Jonassen, D. H. (1999). Designing constructivist learning environments. In C. M. Reigeluth (Ed.), Instructional-design xxxxx theories and models: Vol. 2. A new paradigm of instructional theory (pp. 215-240). Mahwah, NJ: Lawrence xxxxx xxxxx Erlbaum Associates.
Jonassen, D.H., Tessmer, M., & Hannum, W.H. (1999). Task analysis methods for instructional design. Mahwah, NJ: xxxxxxLawrence Erlbaum Associates.
Nelson, L.M. (1999). Collaborative problem solving. In C. M. Reigeluth (Ed.), Instructional-design theories and models: xxxxxxVol. 2. A new paradigm of instructional theory (pp. 241-267). Mahwah, NJ: Lawrence Erlbaum Associates.
Partnership for 21st Century Skills. (2004). Framework for 21st century learning. Retrieved from http://www.p21.org
Geography Education Standards Project. (1994). Geography for life: National geography standards 1994. Washington, xxxxx DC: National Geography Research & Exploration.
Jonassen, D. H. (1999). Designing constructivist learning environments. In C. M. Reigeluth (Ed.), Instructional-design xxxxx theories and models: Vol. 2. A new paradigm of instructional theory (pp. 215-240). Mahwah, NJ: Lawrence xxxxx xxxxx Erlbaum Associates.
Jonassen, D.H., Tessmer, M., & Hannum, W.H. (1999). Task analysis methods for instructional design. Mahwah, NJ: xxxxxxLawrence Erlbaum Associates.
Nelson, L.M. (1999). Collaborative problem solving. In C. M. Reigeluth (Ed.), Instructional-design theories and models: xxxxxxVol. 2. A new paradigm of instructional theory (pp. 241-267). Mahwah, NJ: Lawrence Erlbaum Associates.
Partnership for 21st Century Skills. (2004). Framework for 21st century learning. Retrieved from http://www.p21.org