People with strong visual/spatial intelligence often have a strong visual memory and are artistic.
Example
A student with strong visual/spatial intelligence may respond well to organizing vocabulary using a mind-map or spidergram.
In the classroom
Teachers interested in developing visual/spatial intelligence try to use colours, pictures, diagrams and realia in their classes.
Further links:
https://www.teachingenglish.org.uk/article/graphic-organisers
https://www.teachingenglish.org.uk/article/using-flash-cards-young-learners
https://www.teachingenglish.org.uk/article/recycling-vocabulary