Play based learning is the best possible education for a toddler. That is how their brain works at that age and that is how they will learn and retain their education. They learn colours, shapes, numbers, letters through play. They learn about spatial awareness, gravity, risk, consequences, rewards, turn taking, manners, socialization, large motor skills, fine motor skills and the list goes on!!
To adults it may seem like their only playing but it’s okay, they are doing exactly what they need to do for their age.
The sit down, more formal type of preschool and school will come. Let them enjoy their toddlerhood and trust that play is enough
At home, when you are playing with her, ask her what colour her toy car is? What colour is her dolls shirt? What would she do if her doll told her it was hungry? Sing the ABC’s with her. Do a puzzle. Make some art. I bet she knows more than you think!