It’s important the teacher and support staff work closely to plan how the work will be modified. Together you should identify times when the student will be able to work on a task with the rest of the group and when to set a complementary mapping exercise more suited to their needs.
Where opportunities arise, develop their ability to prepare maps for themselves, starting with mental maps, perhaps describing the route from the classroom to the dining hall. You can also use plastic embossing film (which makes a raised line when drawn on) to allow the child to draw a simple map. Alongside geography, work on co-ordinates will be continuing in maths and science, and these skills are transferable.
Don’t underestimate the task at hand. For a congenitally blind child, concepts such as distance, direction and scale are difficult enough, without trying to understand that the plan is looking down on the earth from above. Some children find it difficult to understand that a car park is "behind" the school and might insist on marking it beside the building.
Introduce cork boards and mapping pins as early as possible for children with severe VI and braillists, along with rubber mats for embossing film.