Here are a couple of tools for training the LittleArm Arduino robot arm.
It is easy to train the LittleArm arduino kit. But the issue comes when you need to get repeatability. The arm will move to the exact same place every time. But if anything in the environment changes then it will not do what you expect.
In factories robot arm ar put into very controlled situations where everything is always the same, because the arm can't tell when something changes.
So we have created a "Training Sheet" and some special blocks just so new users and students can understand how the robot works.
The training sheet details where to place the arm and either several dice or blocks so that they are always in the same location. Then the arm can be trained and nothing will ever change.
The blocks have special depressions in them so that they are easier to grab. These are also a good design to introduce kids to 3D printing. They can learn about overhang, and ahesion, and scaling. The blocks are exactly the size of dice when printed. Kids can measure their prints and compare to real dice to see if them printed well.
Hope these help a few teachers with their robotics curriculum.