Internet Resources:

http://www.sciencenetlinks.com/lessons.cfm?BenchmarkID=4&DocID=164

http://courses.dsu.edu/eled320-360/Fall2001units/Fall%202001/Bunkers/density%20less

http://www.cedu.niu.edu/scied/student/lessonplans/team_2/fall_98/besch_fall.htm

http://student.biology.arizona.edu/sciconn/Sink_Float_lesson.html

http://www.chemistry.org/portal/a/c/s/1/wondernetdisplay.html?DOC=wondernet%5Cactivities%5Csinkorfloat%5Csink_or_float.html

Article Resources:

Hawley,D.,(2002). Building Conceptual Understanding in Young Scientists. Journal of Geoscience Education, 50, 363-371