This Math Shorts episode explains the term rotation, and provides several examples that demonstrate the concept.
Please visit the PBS LearningMedia library to access the supplementary learning materials included with this video.
Common Core State Standards:
CCSS.Math.Cont.8.G.A.3 ( Grade 8 ): Describe the effect of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates.
Utah Education Network