Full Idea
For Aristotle, practical perception is perception of particulars as parts of larger wholes, which involves the perception of their value (as in seeing my food as part of bodily health, and all action as part of a flourishing life).
Gist of Idea
Seeing particulars as parts of larger wholes is to perceive their value
Source
comment on Aristotle (Nicomachean Ethics [c.334 BCE]) by Deborah Achtenberg - Cognition of Value in Aristotle's Ethics Intro
Book Reference
Achtenberg,Deborah: 'Cognition of Value in Aristotle's Ethics' [SUNY 2002], p.9
A Reaction
An appealing idea. Hume (who separates facts from values) would call it rubbish, but with the addition of a premiss like "life is good", this seems plausible and appealing.