Take a spin on the Volcano spinner and build words by connecting consonants and vowel stems with Tri-Blocks. Game develops word building and spelling, compares long and short vowel stems and improves phonological awareness. Tri-Blocks are color-coded to show the sub-syllabic units of sound. Includes the most common onset and rimes. Contains: 54 Tri-Blocks, game guide, volcano box with feely holes, and spinner. For 1-4 players. Ages 6-8 years. Grades 1-3.