Worksheet, in the word’s original meaning, is a scrap of stationery on which one performs work. They come in several kind shapes, most ussually linked with junior school activity task, tax forms, also accounting or another business sphere. Software is increasingly expropriating the paper-based worksheet.
It could be a printed page that a child finishes with a writing equipment. No stuffs are needed. It is “a single paper on which schedules activity, working time, special guidances, etc. are noted. A piece of paper on which problems, ideas, or the like, are write down in temporary form.” In education, a worksheet may have questions for students also where to write answers.
In accounting, a worksheet is, or was, a scrap of ruled paper with rows and columns on which an accountant could log information or perform calculations. These are oftentimes named columnar pads, or typically green-tinted.
In computing, spreadsheet application presents, on a PC monitor, a UI that like one or more paper accounting worksheets. MS Excel, a favorite spreadsheet software, refers to a single spreadsheet (more technically, a 2-dimensional matrix or array) as a worksheet, and it refers to a collection of worksheets as a workbook.