Worksheet, in the word’s authentic meaning, is a scrap of stationery on which one performs work. They arrive in several shapes, most ussually linked with children’s school work assignments, tax forms, and accounting or other business environments. Application is increasingly taking over the paper-based worksheet.
It could be a printed page that a children finishes with a writing equipment. No stuffs are required. It’s “a single paper on which schedules activity, working time, specific instructions, etc. are noted. A sheet of paper on which problems, ideas, or the like, are set down in tentative form.” In school, a worksheet may have questions for students or where to write answers.
In department of accounting, a worksheet is, or was, a scrap of ruled paper with rows also columns on which an accountant could log information or perform calculations. These are oftentimes called columnar pads, and exclusively green-tinted.
In computing, spreadsheet software presents, on a computer monitor, a user interface that like one or more paper accounting worksheets. MS Excel, a favorite spreadsheet application, bases on a single spreadsheet (more technically, a two-dimensional matrix or array) as a worksheet, and it bases on a group of worksheets as a workbook.