Children explore geometric and engineering builds while developing their fine motor, spatial thinking, and problem solving skills through open-ended quality block play with Block Science Unit Blocks Set B. The smooth-sanded rubberwood pieces encourage young builders to create buildings, bridges, and structures to complement builds with their Block Science Foundation Set B.Details:Light woodVarious sized pieces56 piece setMade with smooth-sanded durable rubberwoodContents:16 unit blocks6 half unit blocks4 double unit blocks4 triangles4 small cylinders6 pillars6 small triangles2 half pillars2 half cylinder2 half small circle2 roman arches2 roof boards