Two students in Danielle Adler’s kindergarten class at Marcus Hook Elementary School in Marcus Hook, Pa., prepare for an addition problem. Credit: Holly Korbey for The Hechinger Report The Hechinger ...

Let’s keep things simple – this is basic math. Nothing scary. Just everyday calculations, a bit of geometry, some number patterns, and the kind of stuff you definitely learned in school at some point.

In Boston public schools, 3, 4 and 5-year-olds are getting their first introduction to math. Before they walk through the kindergarten door, the “Building Blocks” curriculum is designed to encourage ...