I don't believe this went through the first time...

I am looking for a book to use for history and a book for science. My daughter is 5.
Two I found are "The World God Made" and "Our Father's World". Has anyone used either of these?

Also, I am curious as to how homeschool years look in comparison to public school calendar years. Do you start and finish when your local schools do? My daughter would be in kindergarten if she turned 5 before September. We are doing the pre-k lessons here but she is soaring through them. Do I need to wait until September to begin the Kindergarten lessons?

Thanks in advance!