functions pl

I keep coming back to the everyday side of exploring scientific questions through clear examples, where a simple detail can lead to a wider question. A useful explanation shows how an observation connects with the question being investigated. That thought gives me a starting point for exploring science learning ideas (https://functions.edu.pl/) in connection with Functions. I would rather explore one useful example carefully than pretend that the whole subject is already clear. What simple comparison would help someone understand why a result matters?