A Pre-Teaching Device for Algebra as far Down as Kindergarten

I am visualizing a collection of 3d animatronics structures, each one inside of an aquarium sized Plexiglas box, each one illustrating a very simple algebraic equation. These could just sit in a corner, and could be activated by a curious or bored student, with the teacher having an interlock start/stop app on phone that makes the box active or inactive. These should be in classrooms, from kindergarten on up. Rotate different ones, once a month.

My first algebra teacher was a math major working on his PhD at Berkeley, and he knew nothing about how to teach, other than to repeat over and over again exactly how he was taught, with no effort to determine where there were communications gaps.