The conclusion packs the final punch of the article, showing the reader why this information is important in the first place. Ending with an interesting quote or point can entice readers to further explore the topic. However, with books you have an entire chapter to make your point. The body of your chapter will answer this question, drawing from the facts in the book and posing possible solutions. If you relate the subject to the reader's own life, he will continue to have an interest in the topic long after he finishes your book.
Endings are important.
Take time with your endings and write them carefully. A satisfying conclusion will not only make reading an enjoyable experience, but children will anxiously await your next work. All copyrights remain with their respective owners. No reprints without written permission.