Free Letters and Sounds Powerpoint from Phase 3, consonant digraph 'ch' A one page Interactive PowerPoint with sounds and action buttons. £0.00 Letters and Sounds - PowerPoint offering children the opportuntiy to practise reading words from phase 3 using consonant digraph 'ch' and previously learned sounds. Please click here to download a zipped file of this resource. We also have a super resource pack available based on Letters and Sounds, phase 3 with a focus on the four consonant digraphs 'sh' 'ch' 'th' and 'ng'. Please click here to view.