A worksheet, in the word’s original meaning, is a scrap of paper on which one performs work. They arrive in many kind forms, most commonly associated with kid’s school activity task, tax forms, also accounting or another business environments. Software is raisingly expropriating the paper-based worksheet.
It could be a printed page that a child completes with a writing equipment. No other materials are required. It is “a sheet of paper on which work schedules, working time, special hints, etc. are wrote. 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 or where to record answers.
In accounting, a worksheet is, or was, a scrap of instructed paper with rows or columns on which an accountant could record information or perform calculations. These are oft called columnar pads, also exclusively green-tinted.
In IT, spreadsheet application presents, on a computer monitor, a UI that such one or more paper accounting worksheets. Microsoft Excel, a favorite spreadsheet software, bases on a single spreadsheet (more technically, a 2-dimensional matrix or array) as a worksheet, and it bases on a group of worksheets as a workbook.