Recognize, name, and pronounce every letter — uppercase and lowercase — fluently. The trainer below tests you on each dimension. Spend short, frequent sessions until recognition is automatic.
Each card shows the uppercase form, the lowercase form (in blue), the letter's Greek name, the standard transliteration, and the pronounced sound.
Sigma (σ / ς). Sigma has two lowercase forms. Use σ at the beginning or middle of a word; use ς only at the end. So 'salvation' is σωτηρία — sigma in the middle. 'Christ' is Χριστός — final-sigma at the end.
Eta (η) and epsilon (ε). Both are 'e' sounds in English transliteration but they're different letters and different sounds. Eta is a long 'e' as in 'they'; epsilon is a short 'e' as in 'pet'. The transliterations ē (with macron) and e respectively distinguish them.
Omega (ω) and omicron (ο). Same story. Omega is long 'o' as in 'tone'; omicron is short 'o' as in 'pot'. Transliterated ō and o.
Once you're comfortable with letter recognition, sound out these familiar words. Don't worry about meaning — just produce the sounds.