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