Best Open Video Playlist for Transformation of Shapes: Grouping Topic | Spatial Aptitude

Question

Please list out the best free available video playlist for Transformation of Shapes: Grouping from Spatial Aptitude as an answer here (only one playlist per answer). We'll then select the best playlist and add to GO classroom video lists. You can add any video playlist link including your own (as long as they are free to access) but standard ones are more likely to be selected as best.

For the full list of selected videos please see here