ClipArtMaps.com supplies a wide range of editable maps and printable PDFs for use in teaching. The maps are easy to change and customize however you need. But what map to use when and where. I recently found a great list of skills on ixl.com for covering geography from 2-8th grade.
The skills range from identifying oceans and continents, finding cities and locating states and countries. All broken down by grade.
You can check it out at https://www.ixl.com/social-studies/geography