Carpenter's squares are analog computers. They are the carpenter's slide rules.
I’ve known carpenters that used geometry without ever being taught geometry. And they didn’t know they were using it.
There you go!
You use algebra every day. We all do!
Algebra is the manipulation & combination of meaningful symbols from which we form more meaningful complex symbol groups that also have meaning subject to a set of rules.
That is alphabet (symbols) builds words, words build expressions and meaning\information is conveyed.
Language with its grammar is an algebra. There are many algebras!
“I’ve known carpenters that used geometry without ever being taught geometry. And they didn’t know they were using it.”
After 2 classes of high school Geometry, I was totally lost and ready to drop out.
Fortunately, a good and kind neighbor had his own construction company, and he showed me how he and later I would use geometry everyday.
My Grandfather was a master carpenter, I spent a weekend with him learning about how geometry impacts/covers us each day.
One of my friend’s dad was the local chief of police, and his Dad took me out to do non dangerous riding/driving if you knew the basic rules of physics and geometry.
I hated algebra, and no one ever taught me how to use it in everyday life. I got one D in my life, and it was is in basic college algebra. All my other courses up to and through an MBA were A’s and B’s.
Carpenter's squares are analog computers. They are the carpenter's slide rules.