These are all the robot building instructions. By visiting each building instruction you could see the Tutorials and Courses and Lessons in which it is used.
This flip attachment from LEGO MINDSTORMS Robot Inventor 51515 set is design to flip parts. It can flip a manhole for example, but could also flip other parts. The principle of flipping is quite interesting as it uses two axles and a border.
Yes, this is a single part. The whole instruction is a single part. This is not an error. This is the part that we use to demonstrate a flip attachment. For consistency even though it is a single LEGO Education SPIKE Prime part, we show the part visually, we don't just mention it in the comments.
This is a flip attachment. Arguably the flip missions are some of the most interesting on FLL competitions. The purpose of this attachment is to accomplish the FIRST LEGO League 2020 Cell Phone Mission. It contains two four gear wheels. It is an active attachment. It changes the direction with gear wheels. There is a lot one could learn from such an attachment. It is also build only from parts in the LEGO Mindstorms Robot Inventor Set.
The purpose of this attachment is to flip the tires in the FIRST LEGO League 2020 Replay competition. There are two tires on the field. The attachment must flip them and return them to their initial position. This is an extremely interesting attachment that is using friction and force in order to flip the tires.