Noah's Treehouse (Book 2 in the series If Not You Then Who? )

It's finally treehouse day! And seven-year-old Noah Fairley cannot wait to start building. But as Noah, Dad, and Grandpa get to work, they run into one problem after another. Determined to finish the treehouse in time for the meteor shower, Noah looks for inventions that will solve their problems and imagines helpful tools that he could invent.