Abstract: An educational set of amusement blocks includes a set of a plurality of pairs of mirror image multi-sided sided blocks. In each set, each block preferably includes seven sides, including various geometric shapes for each side. The blocks are stable, and can stand independently on five of the seven sides. The seven sides are distributed over the three dimensional surface of each block, so as to form structures having a wide base for weight distribution. Each block includes a cantilevered peak, to effect stability, and thereby enable the blocks to stand on five of its seven sides. Because of their stability, the blocks do not topple so easily, and therefore can be used for building intricate structures without the need for interlocking joints. Corresponding planes of one type of block and its mirror image are either painted the same color or in complementary colors, thereby forming patterns which are pleasing to the eye.