Watch the Slash Chords online guitar lesson by Susan Mazer from Hands On Guitar: Beyond Beginner
You’ve probably come across slash-chords in your music before. Some of my students said they simply skipped over them and others thought it meant to play half the measure with one chord and the second half of the measure with another chord. Slash-chords indicate both the chord and the bass note (lowest note played in the chord). They help to create a flowing bass line in your music so the chords don't sound disjointed.