01. A modular learning device comprising of a base board having a frame with plurality of sides, a complementary joining construction on sides of the base board, a front plane, a rear plane, a network of tracks having a spinal track, several dormant tracks, several solution tracks, several parking tracks, the dormant tracks and the parking tracks and the solution tracks are connected to the spinal track, a recess, some parking tracks are also solution tracks; a plurality of sliding blocks having a head, a stopper and a shaft, the shaft having a first end and a second end; and a plurality of wisdom cards having an identifier section, a margin having up to same number of sides as the base board, a plurality of zones in the margin and a middle area, a solution code for problems or situations, each wisdom card containing different problems or situations, an indicator for each problem or situation; different base boards unifiable by the complementary joining construction on the sides of the base board, the plurality of wisdom cards mounted, either one at a time, or in combination, one in each recess of the base board, the plurality of sliding blocks mounted on the base board with the head on the front plane of the base board and the stopper on the rear plane of the base board, the plurality of sliding blocks can move freely in the network of tracks and cannot get dislodged unless the stopper is separated or maneuvered using a minimum force.