Crelin opens with a question that young readers often wonder—why does the moon change shape? Unfortunately, his answer is difficult to grasp. Singsong phrases and forced rhymes stilt the science and muddle the conclusions. “Each changing face (or lunar phase) / repeats each nine-and-twenty days.” Listeners may appreciate the rhythm, but most insight will come from the visual clues. Strategically placed die-cuts show the moon as it waxes or wanes with each page turn. Tabs are also cut into the border and marked with images of the changing moon, forming a timeline at the book’s edge. Evans’s block-print illustrations, carved with precision, echo the slices of moon that are shaved away. In contrast to the rhyming text, a simple end note clearly explains this lunar dance of shadow and light. Fun “Moon Memo-Rhymes” are also included to help remember moon facts. There is no doubt that the author knows his crescent from his gibbous phase; but alas, the verse style should have been limited to the memo-rhymes. Recommended for visual learners at best. (Informational picture book. 6-9)
