A is for Agender, B is for Bigender and C is for Cisgender. Welcome to the ABC of Gender Identity ! Gender identity is an important part of who we are, and how we express ourselves in the world. This bright and playful A - Z book is an introduction to 26 different genders, accompanying young readers as they explore and discover their authentic selves. With simple explanations, a helpful guide for adults by Dr. Michele Angello, and a quirky cast of illustrated characters, this is the perfect book for learning about gender diversity with children age 5+.