This tutorial will take you through the steps required to create or access a mapping spreadsheet using change this later, add mapping data to the spreadsheet, and then upload the spreadsheet to ArcGIS Online as a hosted feature layer.
After completion you will be able to create a web map on ArcGIS Online. See ArcGIS Online tutorial
Before completing this tutorial, students should log on to ArcGIS online with their Grinnell credentials to generate their ArcGIS username and activate their account. Students will need to be assigned a publisher account in order to upload a hosted feature layer.