A clock for teaching time-telling to children has a base with a circular recess containing twelve 30-degree removable wedges forming an annular disk. Each radial edge of each wedge has a semicircular opening that aligns with a complimentary semicircular opening on an adjacent wedge to form a hole that accepts a removable disk numbered from one to twelve. A long pointer and a short pointer pivot about a fastener in a center block, simulating clock hands. Scales denoting minutes, hours, roman numerals, and different color names are arrayed around the perimeter of the circular recess. Each wedge is colored to correspond to a different color name. A child may repeatedly assemble and disassemble the wedges and numbered disks to create a clock face and operate pointers to reinforce time-telling lessons.