Can-do goal

You can hear, distinguish, read and type the target patterns in 長音.

How it works

A long vowel lasts two beats. In hiragana, long a/i/u often add the same vowel; long e commonly uses い and long o commonly uses う.

Meaningful contrast

Length can change meaning: おばさん is aunt or middle-aged woman; おばあさん is grandmother or elderly woman. Count beats rather than stretching randomly.

Practice sequence

1. Listen without looking.
2. Imitate the timing aloud.
3. Read the displayed form.
4. Type it from sound or romaji without choices.
5. Mix it with earlier material.

Mastery task

Complete recognition, listening and active recall with at least five attempts and 80% accuracy in each mode. Recheck the contrasts on a later day.