Click on the links below to learn about surface area:
Cubes
Link #1-AAAMath
Rectangular Prisms
Link #2-IXL
Link #3-Learner.org
Link #4-YouTube-(video-3:03)
Triangular Prisms
Link #1-Algebra.com (lesson video)
Link #2-YouTube (video-5:13)
Cylinders
Link #2-Learner.org