Grammar and sentence construction becomes high - interest with color - coded, interlocking Reading Rods! Color - coding helps students differentiate the eight most common parts of speech. Students also practice connecting rods to build sentences, identifying subjects and predicates, and using appropriate punctuation. Convenient storage bucket contains 156 rods, including nouns, adjectives, adverbs, verbs, pronouns, conjunctions, articles, interjections and punctuation. Use alone or with any Reading Rods Sentence Building materials.