Note to the reader -- Body changes and the tooth fairy: four ways that losing teeth is a lot like puberty -- Ch-ch-ch-changes. Under your t-shirt: all about breasts ; In your underwear: all about the penis, testicles, and scrotum ; Hola, ovaries!: all about menstruation ; Hair, hair everywhere!: all about armpit, leg, facial, and pubic hair, and shaving ; Wait, this actually grows?: all about voice ; You (probably) won't hit the ceiling: all about bone development ; Fits and zits: all about acne ; Stinky and wet: all about sweat -- The whole-body approach. I is who I is and I like who I like: all about gender expression, gender identity, and sexual expression ; Too little, too Zzzzzzzzzzz: all about sleep ; You are what you eat, and don't eat: all about nutrition ; Is it all in my head?: all about mental health ; I'm okay just as I am: all about confidence ; Nobody likes me: all about bullying ; This is all new...: all about crushes, consent, harassment, and abuse ; In my day, I had to walk uphill both ways to get a book: all about technology ; All about those screens, 'bout those screens: all about screen time ; Wait, they still know more: all about what?! -- Resources -- Tips for kids and trusted adults.