ROYSTON, Angela . Asthma diags. ISBN 978-1-59920-219-8 . LC 2007035689. ROYSTON, Angela . Colds, the Flu, and Other Infections diag. ISBN 978-1-59920-217-4 . LC 2007035699. ROYSTON, Angela . Cuts, Bruises, and Breaks diags. ISBN 978-1-59920-222-8 . LC 2007035702. ROYSTON, Angela . Head Lice diags. ISBN 978-1-59920-218-1 . LC 2007035703. ROYSTON, Angela . Tooth Decay diags. ISBN 978-1-59920-221-1 . LC 2007035704. ea vol: 32p. (Hows Your Health? Series). illus. photos. further reading. glossary. index. Web sites. CIP. Smart Apple Media 2008. PLB $27.10. Gr 1-3 It is a simple enough formula: use large text to describe an ailment like tooth decay, then show a full-color picture of a tooth with a small hole that will get bigger if left untreated. Repeat accordingly for each topic on almost every page. This series masters the basics and simultaneously encourages further learning with sidebars that help readers think concretely about the subject. For instance, after stating the exact measurements of a head louse (3 mm long), the sidebar features a dot of the same size. Other suggestions that help solidify ideas include drinking water with a wide straw and then a narrow one to demonstrate the difference between normal and swollen airways, or squirting a water gun to witness the force of a sneeze. Altogether a pitch-perfect presentation.