Picture studies are a component of a Charlotte Mason approach to education. Charlotte Mason tells us to choose excellent images of artworks that are large enough for children to see details. Mason says: "Give them the picture... to look at, and ask them to find out all they can about it themselves…. After three or four minutes, take the picture away and see what the children have noticed.” (Home Education, Charlotte Mason, p. 310). Children narrate what they recall. You can then ask leading questions to help direct their interest to other features, but it's not a quiz or a memory test. The goal is to increase their skills of observation in order to help them appreciate the beauty of art, the skill of the artist, and the content of artworks.