The Worksheet, in the word’s original impying, is a scrap of paper on which 1 performs activity. They come in several kind forms, most ussually linked with junior school activity task, tax forms, also accounting or another business circumferences. Software is raisingly expropriating the paper-based worksheet.
It can be a printed page that a children completes with a writing equipment. No other materials are needed. It is “a single paper on which work schedules, working time, specific guides, etc. are wrote. A scrap of paper on which issues, ideas, or the like, are set down in temporary form.” In school, a worksheet may have questions for students and where to note answers.
In accounting, a worksheet is, or was, a piece of instructed paper with rows or columns on which an accountant could record information or perform calculations. These are often called columnar pads, also typically green-tinted.
In IT, spreadsheet application presents, on a computer monitor, a UI that alike 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, or it refers to a group of worksheets as a workbook.