Cube facts for kids
A cube is a block with all right angles and whose height, width and depth are all the same.
A cube is one of the simplest mathematical shapes in space. Something that is shaped like a cube is sometimes referred to as cubic. Surface area of cube=6d^2 Lateral Surface area of cube=4d^2 Volume of cube=d^3
Relative 2dimensional shape
The basic difference between a cube and a square is, a cube is a 3D figure (having 3 dimensions) i.e. length, breadth and height while a square has only 2 dimensions i.e. length and breadth. The 2dimensional (2D) shape (like a circle, square, triangle, etc.) that a cube is made of is squares. The sides (faces) of a cube are squares. The edges are straight lines. The corners (vertices) are at right angles. A cube has 8 corners, 12 edges and 6 faces, as in the most usual kind of dice.
Volume
 The volume of a cube is the length of any one of the edges (they are all the same length so it does not matter which edge is used) cubed.
 This means you multiply the number by itself, and then by itself again.
 If the edge is named 'd' (See Diagram), the equation would be this: Volume=d×d×d (or Volume=d^{3}).
Cube shaped figures
Images for kids

These familiar sixsided dice are cubeshaped.
See also
In Spanish: Cubo para niños