The narrator's Irish accent, tho...
The introduction to the video says there are six terms that he's hoping we understand by the end of the video...
We get coverage of a tensile test to explain stress, strain, and the stress-strain curve (along with many of its aspects - yield strength, ultimate strength, Young's modulus, fracture, tensile strength, max allowable load/stress, toughness).
He then covers hardness briefly, explaining how the Rockwell hardness test works.
It's not perfect because it left me wanting to know more...but maybe that's the point.
The entire video is six minutes long, and the last forty-five seconds or so is an advertisement for the video's sponsor - annoying but still school appropriate, thankfully.