Clean energy is a hot topic these days and one that is very relevant to our children as we look to the future. These two small paperback books describe a few of the newer energy options, and both books offer some desirable features that would appeal to children in the early elementary years. The books are small, measuring seven inches square, and they have vibrant and relevant photographs on almost all of the 24 pages. With only a brief paragraph or two per page, the reading is not overwhelming, though the content is in-depth. The author includes appropriate scientific vocabulary with adequate explanation for the young reader, such as concepts of potential and kinetic energy. Important words are in bold print to direct the reader to a glossary in the back of the book if needed. A list of suggested books and websites is also included.

Each major energy source is described with words and photographs and with a fair degree of repetition to provide a thorough explanation of where the fuel comes from, how it is harnessed, how it could be used, and its pros and cons. The author also discusses fossil fuels and their drawbacks, highlighting concepts such as renewable and non-renewable resources, pollution, and global warming. Energy conservation and the use of renewable resources are emphasized. The level of depth appeals to me since I prefer to see content-rich information for younger readers who often crave more than a cursory explanation of new concepts.

One drawback to these books is their organization. The chapter titled "Sources of Energy" includes the information about pollution and global warming, which seem a bit misplaced to me. Even so, overall, I consider both books to be useful for a unit study about energy.

Product review by Melissa Theberge, The Old Schoolhouse® Magazine, LLC, January 2009