TLF ID L1061
Transform 2D shapes to make a stack of 3D objects. Start with a shape such as a crescent, semicircle, circle, triangle or rectangle. For example, spin a semicircle around its straight edge to form a sphere or extrude it to form a half cylinder. Choose a shape and imagine it being spun around an axis or extruded. Picture which 3D block your 2D shape will make. This learning object is one in a series of six objects.