This student is befuddled by the problem on the board.
An example of befuddle is when you try to explain a complicated calculus problem to someone who doesn't know anything about calculus.
- to fuddle or confuse (the mind, a person, etc.)
- to stupefy with alcoholic liquor
transitive verbbe·fud·dled, be·fud·dling, be·fud·dles
- To cause (someone) to be unable to think clearly; confuse:
- To stupefy with alcohol; intoxicate.