It’s small, compact, simply laid out, with large font and full-page color photos. All these design elements keep it inviting and non-intimidating for young readers. There are just a few sentences per page, each easily understood, and yet it doesn’t feel skimpy on information. It manages to describe the physics of sound waves and vibrations in terms of tangible things with which young students will be familiar (e.g. stating that though sound waves move through the air invisibly, they do so much as ripples in a pond move through the water). All in all, it’s a solid choice to support the science curriculum.