Many early childhood educators, myself included, believe that every classroom should have a full set of unit blocks, assorted props tied to children’s current interests and experiences, open storage shelves, and plenty of space and time to build and rebuild invented and familiar structures. I canvassed NAEYC staff and Young Children consulting editors to ask, “What do you think children learn through block play?” Here are some responses:, For example, years ago, researchers presented 64 preschoolers with a set of chunky, block-like foam pieces. Half of the kids were randomly assigned to play with these pieces in a convergent way (fitting them, like puzzle pieces, into precisely cut-out openings). The other half were assigned to use the foam pieces in divergent block play., Blocks offer many ways for young dual language learners to explore, express themselves, and demonstrate what they are learning across languages.— Karen Nemeth Mathematics. Important concepts and skills are practiced and strengthened through block play, including length, measurement, comparison, number, estimation, symmetry, balance.—Kristen .