Phonics Pebbles.

Ideal for introducing letters and their sounds, these tactile pebbles are durable for use in sand, water and small world play, indoors and out. Cast from a unique mix, each pebble is engraved with a grapheme and measures 30-45mm. The set contains 64 pebbles covering the 44 phonemes from Phases Two and Three of Letters and Sounds plus the most common alternative spellings from Phase 5