Compare a globe and a map, describing what each one shows and when each one is useful.
A globe is a model of the whole Earth, shaped like a ball, just like Earth really is. A map is a flat picture that shows a place -- it could be the whole world, or just your street.
A globe and a map can show the SAME world in two different shapes. A globe is great for seeing how oceans and continents relate to each other. A map is great for showing one place up close.
Mastery looks like: They can correctly describe what a globe and a map each show, and give one good reason to use each one.
Common stumbles: Thinking a globe and a map show different places, rather than the same real world shown in two different shapes.