Ideal for introducing letters and their sounds these tactile Resin Phonics Pebbles are durable for use in sand water and small world play indoors and out. Cast from a unique resin and stone 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 Five.Compatible with any synthetic phonics schemeDurable and weatherproof- they will not fade over timeHelpful teachers notes included providing ideas for outdoor activities and using alongside reading