Along with memory, children begin to develop a capacity to understand symbolic concepts. They re not able to sit back and think symbolically, the way we like to think most of us are able to do. So most children under the age of 6 or 7 learn best by handling and manipulating real objects, and experiencing real things. They need to explore their world for a long time before they can begin to attach symbols or concepts to things. Another mental change is in the realm of imagination, which is different than fantasy.
Fantasy play requires props.
Imagination is born when a child does not need physical objects to see the play in their minds. They are happy just to sit and play with visions in their heads. First grade ready children become interested in language arts and mathematics. They love to play with words, make rhymes or change words in songs and verses. She would create a scene with little dolls and houses and play with them for long periods of time.