{"product_id":"9780763629724","title":"Top Secret: A Handbook of Codes, Ciphers, and Secret Writing","description":"\u003cp\u003e\u003cb\u003e\"The author's upbeat, positive tone is refreshing and his enthusiasm about his topic is contagious.\" — SCHOOL LIBRARY JOURNAL (starred review)\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003ePssst! Do you know the difference between a code and a cipher? Can you tell a St. Cyr slide from a Cardano grille? Did you know that the discovery of a substitution cipher caused Mary Queen of Scots to lose her head? Don’t look now, but packed into this practical field guide is everything a young person needs to know about the art of concealment - making and breaking codes, mastering cipher systems, and experimenting with secret writing. Offering plenty of hands-on practice sessions, tips for creating a code-making kit, sidebars on secret codes in history, and an amusing pair of spies to illustrate techniques, Paul B. Janeczko’s tantalizing TOP SECRET won’t stay a secret for long.\u003cbr\u003eBack matter includes suggestions for further reading, an author’s note, an answer key, and an index.\u003c\/p\u003e","brand":"Candlewick Press","offers":[{"title":"Default Title","offer_id":47015825211632,"sku":"9780763629724","price":8.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9780763629724_p0.jpg?v=1763656881","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9780763629724","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}