♪ Math, Science, History,
unraveling the mystery ♪
The Big Bang Theory Season 7, Episode 17
♪ Math, Science, History,
unraveling the mystery ♪
The Big Bang Theory Season 7, Episode 12
♪ Math, Science, History,
unraveling the mystery ♪
The Big Bang Theory Season 7, Episode 2
♪ Math, Science, History,
unraveling the mystery ♪
The Big Bang Theory Season 12, Episode 23
# Math, Science, History,
unraveling the mystery #
The Big Bang Theory Season 11, Episode 9