This is a chart that goes over the basics of the four stages of the sleep cycle, and how long the cycle lasts. It's related to the topic of sleep because it goes over the cycle and how long it lasts (which will be on the quiz).
oh boy.Timeline of Baby and Toddler Sleep. This timeline, collated through years of research, will outline these typical rest patterns. It will explain what sleep behavior you can reasonably expect of your little one at each stage of their development.