Instructional Video
Khan Academy

Khan Academy: Sequences of Transformations

9th - 10th Standards
Determining whether segment lengths and angle measures are preserved under a given sequence of transformations.
Instructional Video
Khan Academy

Khan Academy: Rotation Examples (Old)

9th - 10th Standards
An older video where Sal finds the images of shapes under various rotations, and where he determines the rotations that take one shape to another.
Instructional Video
Khan Academy

Khan Academy: Performing Rotations (Old)

9th - 10th Standards
An older video where Sal uses the interactive widget to find the image of a line segment under a rotation.
Instructional Video
Khan Academy

Khan Academy: Determining Rotations (Old)

9th - 10th Standards
An older video where Sal determines the rotation that takes one shape to another.
Instructional Video
Khan Academy

Khan Academy: Defining Transformations

9th - 10th Standards
Given a description of the effect of a certain transformation, we determine whether that transformation is a translation, a rotation, or a reflection.
Instructional Video
Khan Academy

Khan Academy: Proofs With Transformations

9th - 10th Standards
Discussion of line and angle proofs.
Instructional Video
Khan Academy

Khan Academy: Rotating 2 D Shapes in 3 D

9th - 10th Standards
If you rotate a 2D shape about an axis, the shape will define a 3D object. Watch Sal rotating various 2D shapes and see what 3D objects he gets!
Instructional Video
Shmoop University

Shmoop: Transformations

9th - 10th Standards
Explore reflections, rotations, and translations across a coordinate grid. [2:08]