Word Building Dominoes are a fun, hands-on way for beginning readers to practice using word analysis and word formation skills to build vocabulary. Included are 108 double-sided, color-coded dominoes (216 words and affixes): 44 green prefixes, 70 blue suffixes, 102 yellow base words. Use the dominoes with small groups of students, or place them at a center for hours of independent, skill-building learning.. Build hundreds of words with 2+ double-sided dominoes. Dominoes are in bright colors and preprinted with root words, prefixes, and suffixes. Packed in a sturdy, crystal-clear storage container.. Great hands-on tool to supplement classroom learning. 7+ years. Grade 2-12