Answer: So a “Martele stroke” is when you you apply pressure to your bow (at the start) in a strong jolting way to the end of the bow have like a moment silence at the end, also what she means by “four” is having “four hammer strikes”
As i do not know the precise answer to this i can still give you a big hint. Ok how about you google this and or look up pictures This will most likely help you :)
Many times you will see in cubist artworks "deconstructing" an object, looking at it from different perspectives and portraying all of them at the same time, creating a "dissected" 2D image of a 3D object.