
♪ Math, Science, History,
unraveling the mystery ♪
The Big Bang Theory Season 5, Episode 19

♪ Math, Science, History,
unraveling the mystery ♪
The Big Bang Theory Season 7, Episode 24

♪ Math, Science, History,
unraveling the mystery ♪
The Big Bang Theory Season 7, Episode 22

♪ Math, Science, History,
unraveling the mystery ♪
The Big Bang Theory Season 7, Episode 21