see the video it says the pronunciation how it should sound its more of a "constract" depends from what country you are but "a" in my country has no accent like in english where is "Ae"... where in my country is more of "Ah" h being muted.
however the guy in the video might have a english accent i think he is not native english... has a french kind of "sh " in his voice but i might be wrong.
however is regarded as being a non-verb its a object not an action. even though the name depicts the actions you do with it one in primary which is to contstruct games