Plain English Meaning
Extra printed materials an instructor hands out to help students learn — things like worksheets, diagrams, or summary sheets that go alongside the main book.
Full Definition
Printed instructional aids used to support a lesson, such as handouts, charts, study guides, diagrams, checklists, or reference sheets given to students in addition to the main textbook or training manual.
Context Anchor
Seen in instructor lesson planning, ground instruction, and post-lesson review materials.
Derivation
‘Supplemental’ comes from the Latin supplementum, meaning ‘something added to fill a gap.’ Here it means printed material added to fill gaps the main text or lecture leaves open.
Why Pilots Care
Flight instructors use these materials to reinforce points, give students something to take away, and improve beyond what a lecture or textbook alone provides.