This set of 20 educational bricks in foundation font is designed to help children recognise and use vowel letter patterns (where two letters, at least one of which is a vowel, combine to represent one sound/phoneme). Pairs of letters include as ai, ay, ea, ee, ie, ey, ow, oa, ou, ue, ew, oo, oy, oi, er. ir, ur, or, aw, ar. The set also comes with teachers’ notes and a CD with worksheets and wordlists. n.b the base plate is not included.