Canada immigration: how to prepare certification of completion a

Does anyone know how to prepare the certification of completion and the graduate degree?

1. Do these certifications need to be notarized? I have copies of trans and certifications sealed in university envelopes (saved from back when I was applying for school in USA). Can these count?

2. If notarization is necessary, where to do it here in USA?

Thank you very much for this big favor!