Sound Duel
Pick two vowels — e.g. ship / sheep — then drill random pairs. Train the ear first, then the voice.
Choose a contrast to begin.
Which word is this?
Contrasts use Modern RP symbols from the course (KIT /ɪ/, FLEECE /iː/, DRESS /ɛ/, TRAP /æ/, and so on). Guided teaching marks — a few pairs are textbook classics for the ear.