This reminds me strongly of something I saw in or around the late 70s, I think linked with an Open University course my mother was taking at the time. I found i

This reminds me strongly of something I saw in or around the late 70s, I think linked with an Open University course my mother was taking at the time. I found it a fascinating insight into how logic and arithmetic operations were built up. Can't seem to find anything about it online just now, sadly. For the right kind of kid (or adult!) it could be fantastic (and educational) fun.