Each piece easily connects to the next and lets your imagination create colorful flat mosaics or work in 3-D to make more intricate builds. Even curves are possible thanks to the unique design of this deceptively simple shape! A perfect STEM toy to develop fine motor skills, focus and patience - as well as design, imagination and creativity! One shape, endless possibility! Every brick easily connects to the next. Create colorful flat mosaics or work in 3-D to make more intricate builds. Mix and match any Plus-Plus set to bring more ideas to life. This tube includes 70+ pieces and an idea guide booklet.