♪ Math, Science, History,
unraveling the mystery ♪
The Big Bang Theory Season 7, Episode 14
in the 3,000-year HISTORY
of the Chinese empire,
The Big Bang Theory Season 12, Episode 20
♪ Math, Science, History,
unraveling the mystery ♪
The Big Bang Theory Season 5, Episode 6
...A Brief History of the Time I Made
Stephen Hawking Cry Like a Little Girl.
The Big Bang Theory Season 6, Episode 6
One of the advantages
of teaching HISTORY
The Big Bang Theory Season 5, Episode 10