This informative series featuring favorite subjects brings the excitement of discovery to curious readers. Whether enhanced by full-color photographs, stunningly realistic artwork, cutaway diagrams, amusing illustrations, or step-by-step guides, these materials immerse and engage.

This fascinating how-to book allows kids to create and use their own codes - all kinds of secret codes, some based on the alphabet, on grids, on calendars, or on numbers and dots. A story is told throughout the book that can be followed only by using the demonstrated codes.