A child’s wheelbarrow designed in 1923 by Gerrit Rietveld and manufactured in 1958 by Gerard van de Groenekan. © 2012 Artists Rights Society (ARS), New York/PICTORIGHT, Amsterdam

From this Gerrit Rietveld wheelbarrow to Yves Behar’s XO laptop, designing for kids is not simply a matter of scaling down stuff aimed at adults. The global awakening to this reality—and the resulting explosion of architecture, objects, and books for the younger set—is the focus of a must-see exhibition at the Museum of Modern Art. On view through November 5, “Century of the Child: Growing by Design, 1900–2000” offers a global tour of design types, materials and scales, tackling themes ranging from “Avant-Garde Playtime” to “Designing Better Worlds.” Can’t make it to New York? MoMA has launched this gorgeous interactive site dedicated to the exhibition, making virtual visits child’s play.