Function:
Including *6 letter s, 1 quiz and 1 on/off .
4 Learning Modes:
M1. Letters' Names - Press a to hear the letter's name.
Press the quiz to find the letters according to the
questions.
M2. Letters' Sound - Press a to hear the letter's sound and
a word as a sample. Press the quiz to find the letters that
make the sounds.
M3. Music - Press the s to make music, the *6 letters make a
complete melody. Press the quiz to hear the ABC's song.
M4. Quiz - According to the sound, find the letter. Press the quiz
to repeat the question.