♪ Math, Science, History,
unraveling the mystery ♪
The Big Bang Theory Season 7, Episode 19
♪ Math, Science, History,
unraveling the mystery ♪
The Big Bang Theory Season 7, Episode 15
♪ Math, Science, History,
unraveling the mystery ♪
The Big Bang Theory Season 12, Episode 16
# Math, Science, History,
unraveling the mystery #
The Big Bang Theory Season 11, Episode 11
# Math, Science, History,
unraveling the mystery #
The Big Bang Theory Season 11, Episode 12