If you are having trouble with understanding how to find perimeter or area, see the following website:
http://www.bgfl.org/bgfl/custom/resources_ftp/client_ftp/ks2/maths/perimeter_and_area/index.html
Surface Area of A Rectagular prism
The following websites have activities that are helpful:
step by step how to do
http://www.basic-mathematics.com/surface-area-of-a-rectangular-prism.html
video on how to do
http://www.youtube.com/watch?v=Pcjnz26pnwY
interactive activity
http://www.learner.org/interactives/geometry/area_surface.html
more Videos, worksheets, stories and songs to help Grade 6 students learn how to find the surface area of a prism
http://www.onlinemathlearning.com/surface-area-prism.html
one more site activities to practice
www.aaamath.com/geo79_x9.htm
The following websites have activities that are helpful:
step by step how to do
http://www.basic-mathematics.com/surface-area-of-a-rectangular-prism.html
video on how to do
http://www.youtube.com/watch?v=Pcjnz26pnwY
interactive activity
http://www.learner.org/interactives/geometry/area_surface.html
more Videos, worksheets, stories and songs to help Grade 6 students learn how to find the surface area of a prism
http://www.onlinemathlearning.com/surface-area-prism.html
one more site activities to practice
www.aaamath.com/geo79_x9.htm