On :
On The ball is on the box
Above :
Above The lamp is above the cat.
Over :
Over The cat jumped over the box.
In front of :
In front of The teacher is in front of the blackboard.
Beside/ Next to :
Beside/ Next to The circle is beside/ next to the square.
Below :
Below The circle is below the object.
Under :
Under The circle is under the object.
Behind :
Behind She is behind the mushroom.
Across :
Across The box is across the room.