This is number 6 of The Alien in My Pocket series. Zach McGee and Amp, the small alien that lives with him go on a family camping trip. Amp wasn’t supposed to go, but Zach’s little brother left the door to his room open, and Amp came along without Zach knowing it. Zach’s friend, Olivia, who knows about Amp, was allowed to come along with the family on the trip. Zach, Amp, and Olivia manage to get lost in the woods, but Amp teaches them how to make a compass that works, and they find their way out of the woods.

While the story, by itself is a interesting, I like the extra science information given both in the story and at the end of the book. Elementary readers will enjoy reading more of the adventures of Zach and Amp, and they will learn more about science as they read.