Write some examples of activities that involve a robot arm to move in two dimensions.

Examples of activities where a robot arm moves in two dimensions are:

1. Pick-and-place on a conveyor belt – the arm moves sideways (X) and forward/back (Y) to pick objects from one spot and place them in another on the same level.
2. Drawing or writing – the arm moves a pen in the X–Y plane to draw shapes, write letters, or make patterns.
3. Sorting items on a table – the arm moves left-right and front-back to pick different items and place them into separate bins.
4. Placing components on a circuit board (2D assembly) – the arm moves in two directions to position small parts accurately on a flat board.