Toy block

A solid play piece designed for children to stack, arrange, or combine in construction play. Blocks support open-ended building and exploration of shape, balance, and space.

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Geometric shape: A set of points defined by spatial properties such as form, size, and position. A block’s shape determines how it can be stacked, joined, and arranged.
Stacking: Placing objects on top of one another to form a vertical arrangement. Stacking is the basic way blocks gain height and form towers.
LEGO: A construction-toy system of plastic bricks that connect through studs and tubes. Its interlocking bricks show how a block system can enable precise, repeatable assembly.
Construction play: Play in which participants combine materials to make structures, models, or other objects. Toy blocks are among the simplest materials for construction play.
Construction toy: A toy whose components are assembled to create structures, models, or mechanisms. Toy blocks belong to this wider family of assembly-based play objects.
Cuboid: A three-dimensional solid with six rectangular faces. Cuboids are common block forms because their flat faces stack readily.
Structural stability: The ability of a structure to remain balanced and resist collapse under forces. A block arrangement stands only while its supports and center of mass remain favorable.
Jenga: A stacking game in which players remove and replace wooden blocks without collapsing a tower. It turns block stability into a shared game of risk and careful movement.
Spatial ability: The capacity to perceive, imagine, and reason about spatial relationships and transformations. Rotating and arranging blocks exercises judgments about position and orientation.
Magnetic building toy: A construction toy whose pieces connect through magnetic attraction. Magnetic connections permit joints and spatial arrangements that loose blocks cannot hold.