A whole note lasts the same as four quarter notes
A half note lasts the same as four quater notes
Two eighth notes make a quarter note
A whole note has twice the value of a half note
A whole note is the longest note
Two quarter notes make a half note
A half note is the same as six semiquavers
Four quarter notes last the same as a half note
Eight sixteenth notes make a half note
Four half notes make a whole note