The phrase "a practical portion" is correct and usable in written English.
It can be used when referring to a segment or part of something that is functional or applicable in a real-world context.
Example: "In our workshop, we will cover a practical portion that focuses on hands-on experience with the tools."
Alternatives: "a functional segment" or "an applicable part".
Each exam will have a multiple choice portion as well as a practical exam portion.
The researchers, from Caltech and University of Southern California, first argue that restoring vision is at present simply not a realistic goal, but that replacing the perception portion of vision isn't necessary to replicate the practical portion.
I now have to address the practical portion of weeping.
A central problem was that many of the students were unable to complete practical portions of their training in Jamaica required for licensing in Canada because the Pre-University School hacceptedted students unable to enter practical training for technical reasons (Reid 2011).
Imagine a performance appraisal for any job where it would be appropriate to ask, "what is there other than the effort you put in?" One of the most realistic and practical portions of higher education is the ultimate expectation of results–just like in the real world.
As technology advances and becomes increasingly more accessible to a greater portion of the population, videoconferencing may become a practical option in addition to psychotherapy by telephone.
This is, as I've bossily written before, partly an aesthetic dictate, but mostly it's a practical one; if each portion of cheese is small, however many there are, everyone is going to feel inhibited about cutting some off.
From a practical standpoint, however, only a portion of the material flowing past a near-infrared sensor could be practically scanned and the sub-sampled biomass would have to be representative of the entire population to be accurate.
A plate that regularly reflects choices from all food groups, in moderate portions, is a practical and easy way to stay healthy and maintain the right weight for you.
As a practical matter, that means the public portion is on the damp sand -- a rule rigorously enforced on Broad Beach by security guards and sheriff's deputies called as backup.
