A map is a picture of an area of land or sea showing physical features, cities, roads, etc.
Underneath means situated directly below.
A detail is an individual feature, fact, or item on something. A map with a lot of details would have many things on the map. Look at a map with your child and point out some of the details.
An instruction is a direction or order.
Ask your child what a map does. Help him or her draw a map with details. Talk about what underneath means.
Thank you for helping your child learn!