I use these posters as scaffolding when my intervention students are developing phonemic discrimination of vowel sounds. There are 13 posters in the set:
SHORT VOWELS: a, e , i, o, u
LONG VOWELS: ai, ea, ee, ie, oa, ue, ui
VOWEL DISCRIMINATION - included as the PREVIEW
You could use these in intervention like I do, or you could put them up in a Literacy Centre and they would support writing and spelling development.
These posters are included in my SORT IT Bundles, Phase 2 and Phase 3.