The Lemonade War

I originally read the fourth in this series first.  (link) I was unaware it was a series.  I liked it so I thought I would go back and see how it all started.  Jessie and Evan are siblings.  Evan is starting fourth grade.  His sister should be starting third, but she skipped a grade and will be in his class!  Evan is not happy about it.    When they could have been working together on a lemonade stand for the last week of the summer, the two are battling against one another, not really understanding what is behind their anger and competition.  This is a quick, fun read.  I will buy more in the series as I think it will be a hit.  (FIC DAV)