This is an attractive workbook. In public library terms, it suffers from the heavily questioned/directed ""you""; the reader must follow actively rather than read passively to a point of measurable knowledge or definitely stated information. However, for the book's major market, its simplicity is appealing. No, chemistry equipment, no expensive or inexpensive extras required -- just the usual household paraphernalia. Followed through, the book and one lemon can teach some basics about acids, about effervescence, about buoyancy, etc. and provide a basis in a book a child can use by himself for that greatest of intangibles in early childhood education -- continuing interest. Peter Plasencia's cartoon illustrations provide some visual aid to equipment and method. Some aren't necessary, but all are consistently good humored. Experiment books are still going like hotcakes to the institutional markets, even if they don't sell for 10f a stack.