Worksheet, in the word’s original impying, is a scrap of paper on which 1 performs work. They come in several kind forms, most ussually connected with junior school work task, tax forms, and accounting or another business sphere. Application is increasingly taking over the paper-based worksheet.
It could be a printed page that a children finishes with a writing tool. No other stuffs are required. It is “a sheet of paper on which work schedules, working time, special instructions, etc. are wrote. A piece of paper on which problems, ideas, or the like, are set down in temporary form.” In education, a worksheet may have questions for students or where to note answers.
In accounting, a worksheet is, or was, a sheet of ruled paper with rows and columns on which an accountant could note information or do calculations. These are often named columnar pads, and typically green-tinted.
In IT, spreadsheet application presents, on a PC monitor, a user interface that alike 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, or it bases on a group of worksheets as a workbook.