Within the pages of this remarkable book, readers will find paper pop-ups that include a musical instrument with strings and a paper pick for strumming, a decoder ring, a perpetual calendar, a planetarium for projecting constellations, a cone speaker, and a spiralgraph.

Each model is fully functional and can be used by the reader to pick notes and strum chords, create [or break] a code, find any date, project a constellation and stargaze at the night sky, amply sound, or create a geometric drawing.

There’s no particular relationship between the projects other than to demonstrate the diversity of the projects, and to bear witness to a few of the many marvelous things a sheet of paper can become. This pop-up book introduces readers to some of the ways in which the physical world works, encouraging them to look at the world around them in a new way, to participate in a new journey of discovery each time the page is turned.

The only drawback is that, on some of the pages, the “Why it Works” printing is almost the same color as the page background, making it particularly difficult to read the accompanying text. However, readers shouldn’t let this deter them from engaging, experimenting, and experiencing all that is offered in this amazing book.

Highly recommended. ( )