Build words with your Tri-Blocks® and learn consonants and short vowels (CVC). Turn each block and manipulate the middle vowel sound or change a spelling with a consonant. Tri-Blocks® let children know spelling rules by their colour-coding and unique block orientations. Teach phonemic awareness, word building and spelling.Also, for use with CVC Builders Activity Cards (sold separately).The tub contains 90 x Tri-Blocks® Ages Year 4 - 5 New Entrant - 2    WARNING: CHOKING HAZARD-Small parts. Not for children under 3 years.