Crosson Needles delivers a new Three Section Approach that mirrors the way instructors have told us they teach and students best learn Moving students through Concepts then Accounting Applications and finally Business Applications students follow a logical progression through the material and building on what they know The new Tri Level Problem in CengageNOW supports this approach Crosson Needles delivers a new Three Section Approach that mirrors the way instructors have told us they teach and students best learn Moving students through Concepts then Accounting Applications and finally Business Applications students follow a logical progression through the material and building on what they know The new Tri Level ...Problem in CengageNOW supports this approach