Thanks a separate sentence is an excellent idea but we will need reliable sources for it Rather than tag bomb the sentence I ll do it here typically in education everybody knows students are included in everybody but they don t know the other kind of numbers natural numbers counting numbers natural numbers with or without zero Why was the term counting numbers introduced circa 1965 per Merriam webster com At what educational level is the term counting numbers replaced with another term Sourcing ideas include books on pre algebra and mathematics curriculum standards 50 53 39 110