WHY A TECHTORIAL? What will I learn today? You will learn how to use if/then statements in Excel to create self-correcting worksheets. What hardware and/or software does the techtorial apply to? The techtorial applies to Microsoft Excel. Which National Educational Technology Standards for Teachers does the techtorial address? The techtorial will help teachers accomplish standard IIa in particular. The International Society for Technology in Education (ISTE) has developed a set of National Educational Technology Standards for Teachers. Standards or Performance Indicators are included for each techtorial to help teachers and administrators improve technology proficiency. For a complete description of the standards indicated, go to NETS for Teachers.