A preposition is a word that shows the relationship between a noun or a pronoun and another word in the sentence.  One way to think of prepositions is to remember that they indicate location. If we change the preposition, we change where Ratty is.
 

We have learned about prepositions with the help of our friend Ratty.  To demonstrate our learning we combed the school  looking for places where she could be.  Click on our books to find out!

 

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click on the book to read on an ibook