/ Geography board map refers to that in geography teaching, geography teachers, relying on memory and skilled skills, quickly draw the complicated maps and geographical things and memorization phenomena into a simple blackboard map with very concise brushwork, which is also called thumbnail, sketch map and schematic diagram. This kind of map is flexible and simple in geography teaching. It is designed to highlight the characteristics and save time without any special equipment. It only needs a piece of chalk (or chalk of different colors). It is the right-hand man of geography teaching language and occupies an important position in geography teaching.