In many educationalsettings,manipulative materials(such as CuisenaireRods andPatternBlocks) play an important role in children’s learning, enabling children to explore mathematicaland scientific concepts(suchasnumberand shape)through directmanipulation of physical objects.Our group at de MJT Media Lab has developed a new generation of “digital manipulatives”-computationallyenhancedversionsof traditional children’s toys.Thesenew manipulatives enable children to explore a new set of concepts(imparticular,“systemsconcepts”suchasfeedback and emergence)that havepreviously beenconsidered“too advanced”for children to learn. In this paper,we discuss four of our digital manipulatives-computationallyaugmentedversionsof blocks,beads,balls,andbadges. Keywords Bducation,learning, children,ubiquitouscomputing