Children are influenced by their peers about how they dress and what they eat. Teaching a child about a particular food allergy and its dangers can be difficult. However, when a child is allergic to a particular food or a particular substance in a food, strict avoidance of the substance can be critical. It is easy to explain to a child how an insect bite may cause their skin to swell and itch because they can see the offending bite and its results. A child cannot see why eating an egg may cause their skin to break out in red patches, or why eating peanut butter may cause them to have trouble breathing. This series, titled "First Facts. Health Matters," presents simple, brief explanations about how things that affect the young reader happen. Each title contains a hands-on activity that illustrates the principles discussed in the book or gives additional information. The glossary contains all the words that are in bold print throughout the text. An index and suggestions for further reading are included. This publisher maintains a web site, facthound.com, that directs children to resources chosen for age appropriateness. Each selection of resources is identified by typing in the book ID. Resources selected are then specific to age and the subject of the title. This management of resources is particularly helpful for this age group. All titles in this series have the same resource management page, and all titles are recommended for elementary classrooms and media collections.