Do you adapt your centers for your preschool lesson plans? If you don't, you should. That is really how you really enforce the concepts. We all know children learn through play, and during play is when the most learning takes place. So, if you arrange the environment and toys to reinforce the important concepts, you will be more successful.
If you are doing apples- have trees in blocks, have a bowl of apples in home living, have apples at the water center, have apple related manipulatives. Using a computer, making an apple file folder game is easy!
Here is a WONDERFUL book on classroom design. Check it out!!!