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Priya Shankar

Early childhood researcher

May 25, 2026

My toddler taught herself fractions with a banana

What looks like "just playing" is actually the most efficient learning system humans have.

My 28-month-old held up half a banana and said, "Half." Then she broke it again and said, "Two half." Nobody taught her that. She figured it out at breakfast.

I'm an early childhood researcher. I should not have been surprised. I was completely surprised.

"Play" is a terrible word for it

It sounds frivolous. It sounds like the opposite of work. Decades of research suggest the exact opposite.

A 2018 review in *Pediatrics* (Yogman et al.) concluded that play — especially unstructured, child-led play — improves executive function, language, and emotional regulation more reliably than most "educational" interventions tested on toddlers. The American Academy of Pediatrics now officially recommends play as a clinical intervention.

What counts as the good kind of play?

Researchers at the LEGO Foundation list five markers: - It feels joyful (even when it's frustrating in the middle) - It's actively engaging - It's meaningful to the child - It involves trying things out - It's social — even if "social" just means you watching

The banana counts. So does the empty Amazon box. So does pouring water from one cup to another for 25 minutes.

What I stopped doing

I stopped narrating her every action like a sportscaster. I stopped suggesting "what if you put the blue block on top?" I sat down on the floor and let her drive. She's better at it than I am.

— Priya