I got this rock with a bunch of drawings on it.  It looks gray and  has something that looks like a horse and a stick man.   The clue says that some kind of ancient Indians used to do this like a diary.
 

What I know                            What I want                    What I learned                                     to know
______________________________________________________________
picutres on a rock                  who wrote it?

looks like a man                      what does the picture
hunting                                    mean?

the picture is very old             How old is it?
 

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What we did:
First we wrote down all the clues and drew pictures in our journals.  Then we went on the computer and got on the Timeline.  We clicked on the underlined words and followed the clues.
            1.     The Indians lived near Phoenix.
            2.    The Spanish called their houses Casa Grande
            3.     We searched and found that the same Indians used a certain cactus.

We think it is the Pima Indian tribe.