Plant Specimen 1: Plantain, broad leaf I believe. Plant Specimen 2: I believe part of the Mustard Family.
Closest guess: False London Rocket.Plant Specimen 3: Arctic Dock I believe. Plant Press, enclosed are three plant specimens Plant specimens shall be labeled and entered into my own Herbarium once finished
Thanks Ana,
an important part of this exercise would be creating the labels for your specimens, the where, who and when. So please add this information in another image responding to this reply. Thanks!