OK so this is really old school. Back in the 1980s, as a latchkey kid, I played on the computers in the library in elementary and middle school. There was this one bizarre educational game that I'd love to find more about.
It involved connecting a bunch of nodes with wires, creating a big rube goldberg contraption that did things to words or numbers. Press the play button and stuff pops out of some of the nodes, travels along all the little conveyer belts, interacts in some other nodes, and pops out in various places. It was a very "just play with it and see what it does" kind of game. I forget if there was even a purpose, like being required to get a certain output into a bucket or something.
"The Incredible Machine" is close but no cigar. It's not falling objects in a literal rube goldberg machine, it's squares connected by wires, like some modern day audio-processing pro software:
But this was a kiddie game. Mid-80s.
Cross-posted on Retrogaming: https://retrocomputing.stackexchange.com/questions/19837/looking-for-an-educational-game-from-long-ago