Book excerpt: Teaching your child about sex can be a rewarding, relationship-strengthening experience. You just need to be equipped with the right tools: clear, easy-to-explain information; critical questions to ask; good timing; and a sense of humor. Often touched on only lightly in schools, sexual knowledge is one of the most important parts of your child's education. Help encourage positive thought, relationships, and decision-making with Dr Berman's resourceful, reassuring, and comprehensive new book.