4 years & up. Build vocabulary, improve rhyming skills, and practice identifying initial and final consonant sounds. The Big Box of Rhyming uses puzzle pieces with pictures of 45 word families to help children visually connect vowel sounds and more to daily life. Rhyming words are like building blocks of language. They introduce and expand word recognition, word vocabularies and phonemic awareness. Great for children that struggle with speech and more. Includes 250 puzzle pieces measuring 2"x 2" each.